Glossary: All Tennis Terms & Definitions Explained

A tennis glossary is an alphabetical list of tennis terminology with definitions.

Tennis Glossary

Tennis can be a daunting sport to learn when you’re just starting, as you must learn how to hit your shots, what everything means, and how it all fits together. But, if you’re looking for clarification on some tennis terms, you’ve come to the right place. We’ve compiled a list of all the tennis terms you should be familiar with and their meaning and definition.

Ace:

A serve that is a winner without the receiving tennis player being able to return the ball.

Action:

Action is a synonym for spin and means rotation of the ball as it moves through the air, affecting its trajectory and bounce.

Ad Court:

Refers to the left service court from the point of view of the player or team that is receiving service.

Advantage In/Out or Ad-In/Out:

It is the point scored after Deuce. If the serving side scores, it is Ad-in. If the receiving side scores, it is Ad-out.

All:

A term used when both players have the same number of points from 15-15 (15-all) to 30-30 (30-all). When the score is 40-40, the term is deuce.

All-Court Player:

All-court players, or all-rounders, have aspects of every tennis style, whether offensive baseliner, defensive counter-puncher or serve-and-volleyer. All-court players use the best bits from each style and mix them to create a truly challenging tennis style to play against.

Alley:

The area between the singles and doubles sideline on each side of the court.

Approach Shot:

A hard, forcing shot made deep into the opponent’s court, allowing the player to move in toward the net for an offensive volley.

At Net:

A player’s position near the net is referred to as “at net.”

ATP:

The Association of Tennis Professionals (ATP) is the men’s tennis governing body.

Australian Formation:

The Australian doubles formation is a tactic for varying positions on serve. The net player sets up directly across from the opposing net player, while the server is closer to the middle of the court.

Backcourt:

This refers to the area of the court from the baseline to the service line.

Backhand:

A shot struck by holding the racquet in the dominant hand but swinging the racquet from the non-dominant side of the body with the back of the dominant hand pointing in the direction the ball is being hit.

Backhand Smash:

A sort of smash performed on the backhand side.

Backspin:

It refers to the reverse rotation of a ball, in relation to its trajectory, imparted on the ball by a slice or chop shot. Backspin generates an upward force that lifts the ball.

Backstop:

A wall, fence, or similar structure prevents a ball from traveling too far beyond the court.

Backswing:

A backswing is the backward motion of a swing that moves the racquet in preparation to swing forward and strike the ball.

Bagel:

The term bagel in tennis is slang that refers to the score of 6-0. Tennis players use the word bagel to represent the score of zero because it resembles the shape of a bagel.

Ball Abuse:

For this Rule, abuse of balls is defined as intentionally hitting a ball out of the enclosure of the court, hitting a ball dangerously or recklessly within the court or hitting a ball with negligent disregard for the consequences.

Ball Boy or Ball Girl:

Boy or girl (or man or woman) responsible for retrieving tennis balls that are out of play and supplying them to the server before each point.

Ball Toss:

The action of throwing the ball into the air at the start of the service motion.

Baseline:

The court’s back line that runs parallel to the net and perpendicular to the sidelines. 

Baseline Game:

This is where you’ll hit your groundstrokes and serve. It’s the line that runs parallel to the net at the back of the court, farthest from the net and closest to the back fence or wall.

Baseline Judge:

A baseline judge is an official stationed on a line with the baseline who is responsible for determining whether shots are in or out.

Baseliner:

A tennis player whose strategy is to play from the baseline.

Big Serve:

Is a serve that, even if not placed well, has so much pace or spin that it overwhelms the returner.

Bounce:

Bounce is the ball’s upward movement after hitting the ground. The trajectory of the bounce can be affected by the surface, weather, amount/type of spin and the power of the shot.

Breadstick:

Term for the shape of the 1 in a 6-1 win or loss.

Break or Breakpoint:

Break means to win a game as the receiving player or team, thereby breaking serve.

Breaker:

A colloquial term for tiebreak.

Break Point:

One point away from breaking serve.

Buggy Whip:

The buggy whip is a forehand shot in which the racket is brought up over the head after hitting the ball instead of across the body or over the shoulder.

Bumper Guard:

A bumper guard is the protective extension of the grommet strip at the top of the frame that prevents the strings on the outside of the frame from being damaged when the racket scrapes the ground.

Bye:

A bye refers to the automatic advancement of a seeded singles player or doubles team from one round to the next without competing against an opponent.

Calendar Slam:

Winning the Australian, French, Wimbledon, and the US Opens in the same year.

Call:

Is a player or court official’s decision as to whether a ball was in or out.

Career Golden Slam:

A tennis player is said to have completed a career Golden Slam if they also won the Olympic gold medal and won all four major titles.

Carpet:

Even though no ATP or Grand Slams are played on it anymore, it is one of the four most common court surfaces. It is also one of the fastest court surfaces out there.

Carry:

A carry is an illegal shot on which the ball is held and/or carried on the racket rather than struck.

Carve:

A carve is an act of receiving a groundstroke shot by doing both an underspin and sidespin.

Center Court:

The tennis court venue’s premium seating location.

Centerline Judge:

The Centerline judge is an official responsible for watching the center service line to determine whether a serve has entered the service court.

Center Mark:

The center mark divides the baseline in half and runs perpendicular to the net. It defines the point you cannot cross when hitting a serve in either the deuce or ad court.

Center Service Line:

The Center Service Line is the dividing line between the two service courts.

Chair:

The chair is the umpire’s seat. Also, the term is used to reference the umpire, as in “The chair ruled that the shot was good.”

Challenge:

Challenge is what happens when a player tries to request an official review on where specifically the ball landed.

Changeover:

Change-over, also called change of the ends, means rest time given after players change ends after an odd-numbered game. The period for rest lasts for 90 seconds.

Chip:

Method of using underspin to block a shot back into court. Sometimes used as a tactic to counteract a powerful serve.

Chip And Charge:

When a player returns a serve using a slice shot and goes to the net immediately after for a volley.

Chop:

A stroke that generates large amounts of backspin.

Clay Court:

A clay court is one of the types of tennis court on which the sport of tennis, originally known as “lawn tennis,” is played. Clay courts are made of crushed stone, brick, shale, or other unbound mineral aggregate, depending on the tournament.

Clean Winner:

A clean winner is a shot that the opponent cannot reach.

Closed Racket:

A closed racket is the hitting surface of the racket aimed downward.

Closed Stance:

Striking the ball with your back to the opponent and your body parallel to the baseline.

Counterpuncher:

A defensive baseliner, counterpuncher or retriever tries to return every ball and relies on the opponent making mistakes.

Court or Tennis Court:

Is the area where a tennis game is played.

Crosscourt Shot:

A shot that is hit diagonally across the court.

Cut:

Cut means to hit the ball with a short, downward slicing motion, often drawing the racket strings across it to give some sideways spin in addition to backspin.

Cyclops:

Cyclops is a computer system used on the ATP and WTA professional tennis tours as an electronic line judge to help determine whether a serve is in or out.

Dampener:

A dampener is a small accessory made of rubber you can add to your racket to reduce the vibration when you hit the ball.

Daisy Cutter:

A shot that skids or takes a very low bounce.

Davis Cup:

The annual Davis Cup is the premier international team event in men’s tennis.

Deep Shot:

This is a term used in tennis to describe a hit that goes deep into the opposite court, nearly hitting the baseline.

Default:

A default occurs when a player is removed from a match or tournament for any number of violations spelled out in the official rule book.

Defensive Lob:

A lob struck when there is no time to prepare.

Defensive Volley:

Defensive volley is a volley, usually hit from below the top of the net, simply as a means of returning the opponent’s shot to keep a rally going.

Deuce:

Deuce refers to the time during a tennis match in which the score of a game is tied 40-40.

Deuce Court:

The right side of the court. It is from this side that a player will first serve, and will also serve when the score is deuce.

Dink:

This is a soft return in tennis with very little power or pace and intends to drop right over and close to the receiver’s side net.

Dirtballer is a term used to describe a specialist on clay courts.

Double Bagel:

A double bagel describes the outcome of a match where the score is 6-0, 6-0. 

Double Fault:

A double fault occurs whenever a tennis server fails to get their first and second serve inside the service box. 

Double Hit:

The act of striking the ball twice in the same stroke. It results in the loss of the point.

Doubles:

A tennis game played by four players, two per side of the court.

Doubles Court:

The doubles court is the playing area for a doubles match, which includes the two alleys as well as the singles court. The area is 78 feet long by 36 feet wide.

Down The Line:

A shot hit straight down the court, close to one of the sidelines.

Drag Volley:

Drag volley is a volley hit with backspin

Draw:

The schedule of a tournament. Seedings and a random selection process determine the draw.

Drop Shot:

A soft shot that drops just over the net; usually hit with backspin to minimize its bounce and when an opponent is deep in the court.

Drop Volley:

A drop shot made on a volley so softly hit that it falls to the playing surface just after clearing the net.

Elbow:

The intersection of the baseline and the doubles alley.

Error:

A missed shot or lost point that is entirely a result of the player’s own blunder and not because of the opponent’s skill or effort.

Exhibition:

A match or tournament that is not played for money or ranking points but for entertainment or raising money.

Fault:

During a serve, when the ball does not land inside the service area on the full. The player loses a point after two consecutive faults.

Fed Cup (or Federation Cup):

The Billie Jean King Cup – formerly known as Federation Cup (1963-1995) and Fed Cup (1995-2020) – was launched in 1963 to celebrate the 50th anniversary of the International Tennis Federation (ITF). It is now the world’s largest annual international team competition in women’s sport, with 116 nations entered in 2020.

Fifteen or Five:

The first point of a game for either player or side.

First Flight:

First flight is the flight of the ball after it leaves the racket and before it bounces.

First Serve:

The first of the two attempts to serve that a player is allowed at the beginning of a point.

Flat:

A shot hit with no spin.

Follow Through:

The part of the swing after the ball is hit. A good follow through is important for accuracy and power.

Foot Fault:

A foot fault happens occurs when the server touches the baseline with their foot before or during contact with the ball.

Foot Fault Judge:

A foot fault judge is an official on the baseline who is responsible for calling foot faults.

Forced Error:

A shot placed so that the opponent misses it.

Forehand:

Is a stroke made with the front of the dominant hand facing the direction in which the ball is being struck.

Forcing Shot:

Forcing shot is a tactic that puts the opponent on the defensive; often an approach shot.

Forecourt:

The forecourt is the section of each side of the court that is nearest to the net.

Forty:

Forty is the third point of a game for either player or side. If both reach forty, it is called deuce.

Frame:

Racket frame is the oval piece of the racket to which the stringing is attached.

Frame Shot:

A frame shot is a mishit on the racket’s frame rather than the strings.

Gallery:

Gallery is the spectator area at the ends and sides of a court.

Game:

A game is the second stage of the tennis scoring system. Essentially, it is an accumulation of 4 or more points won by the same player. It is also the building block of a set. Each set must comprise at least six games.

Game Point:

A game point in tennis occurs when a player wins the current game by scoring the next point.

Game-Set-Match:

“Game, set, match” is the phrase used by tennis players and officials to indicate that a winner has been determined and the match has concluded.

GOAT:

Abbreviation for “Greatest Of All Time.”

Golden Set:

In tennis, a golden set is a set which is won without losing a single point. This means scoring the 24 minimum points required to win the set 6–0, without conceding any points.

Golden Slam:

In tennis, a Golden Slam, or a Golden Grand Slam, means an athlete wins four major championships and an Olympic gold medal in the same calendar year.

Grand Slam:

In tennis, Grand Slams are the four most prestigious tournaments in the world – in terms of points and prize money. The 4 Grand Slams are the Australian Open, French Open, Wimbledon, and US Open.

Grass Court:

Grass is one of tennis’s three main playing surfaces (clay & hard courts). It is the traditional lawn tennis surface and famously the signature courts of Wimbledon. The grass turf produces a fast surface with a low bounce.

Grinding:

Grinding is when you use consistency and patience against a bigger, flashier player while refusing to give up.

Grommet Strip:

A grommet strip refers to the plastic inserts surrounding the head of the tennis racket. These plastic inserts are stretched out over the string holes of the tennis head. The grommet strip protects the strings from harsh surfaces and edges

Groundstroke or Groundie:

A groundstroke, also known as a groundie, is a forehand or backhand stroke hit after the ball bounces on the court. It is one of the fundamental core shots in tennis and is normally played from the back of the court during a baseline rally.

Grunting:

Grunting in tennis is the very loud noise, sometimes described as “shrieking” or “screaming,” made by some players while and after hitting their shots. Tennis players grunt because it helps them concentrate, breathe, and increase their intensity.

Hail Mary:

A Hail Mary is a shot performed for defensive purposes and considered an extremely high lob.

Half Court:

Halfcourt is in the vicinity of the service line midway between the baseline and net, also called mid-court.

Hardcourt or Hard Court:

Hard court, also known as hardcourt, is the most common and widely used tennis court surface worldwide, especially in the United States. Hard courts are constructed from asphalt or concrete bases with a synthetic/acrylic layer. They come in various colors and play at a medium to fast tempo.

Hawk-Eye:

A ball-tracking computer system linked to cameras allows players to challenge calls by reviewing line calls.

Head:

The top part of the racquet comprising the frame and strings and is used to hit the ball.

Heavy Ball:

Tennis lingo for a topspin shot with a lot of pace.

Hit on the Rise:

A ball hit before it reaches the highest point of the bounce.

Hold or Hold Serve:

To win the game when serving, use Hold or Hold serve.

Hopper:

A tennis ball hopper or basket is a practical piece of tennis equipment to store, pickup, and conveniently bring tennis balls to the court.

I-Formation:

I-formation is a doubles tennis strategy carefully planned to confuse the opponent returning the serve.

In:

Is call made when a ball falls within the playing area.

Inside-in:

When a player runs around their backhand side to hit a forehand down the line.

Inside-out:

When a player runs around their backhand side to hit a forehand crosscourt.

ITF:

The International Tennis Federation (ITF) is the world’s governing body of tennis.

Jam:

To hit the ball straight to the opposing player’s body not allowing them to extend the racquet to hit the ball well.

Jump Smash:

Jump smash is a smash that is a powerful hit while the player is jumping into the air. 

Junk Ball:

Junkball is a non-spinning ball in tennis to surprise and ruin the opponent’s rhythm.

Kick Serve or Kicker:

A kick serve is a serve where you brush up and over the back of the ball in order to achieve some important results: Good clearance over the net. The ball dipping down into the box. Moving laterally of the court. Bouncing up above the opponent’s shoulders.

Kill:

A stroke in which a player will aim to win the point using the maximum possible power, so that his opponent has no chance of reaching the ball.

Lawn Tennis:

Lawn tennis is the more traditional form of the game that is especially played on grass courts.

Let:

Let is often called when a point has been interrupted in some way. The most common instance of a let is a service let when the ball clips the net tape but still lands in the service box. This causes a hindrance for the opponent, and the serve is retaken.

Line Judge:

A line judge in tennis is an official whose first responsibility is to decide and communicate whether a ball landed in or out of bounds during a match.

Lob:

A ball hit high in the air attempting to land behind the opposition player.

Lob Volley:

A type of Volley shot that aims to lob the ball over the opponent and is typically used when the opponent is close to the net.

Long:

Alternative call to “out” when a ball lands beyond the baseline.

Love:

Since the late 1800s, the word “love” has been used to represent a score of zero in tennis. It’s unclear how this usage of “love” came about, but the most widely accepted argument is that those with zero points were still playing for the “love of the game” despite losing the match.

Love Game:

A love game is a game won without allowing the opponent to score a single point.

Love Set:

A game or set in which the losing player did not win any games.

Lucky Loser:

A lucky loser is a player who loses a qualifying match but then advances to the main draw to replace a player who has to withdraw because of illness, injury or other unexplained reasons.

Mac-Cam:

MacCAM is a system of slow-motion cameras used during tennis matches to replay close or controversial line calls. The system is named after John McEnroe, infamous for contesting umpire calls.

Masters Cup:

The Tennis Masters Cup is a tennis tournament played annually at the end of each year, involving the top eight players in the men’s tennis world rankings.

Match:

Match is the term used to describe an entire tennis contest.

Match Point:

A point in a match that, if won, brings the match to an end.

Mini-Break:

In a tiebreak, a point won against the server when ahead.

Mini-Hold:

Mini-hold is a point won by the server, usually in a tiebreak.

Mis-Hit:

This happens when the player fails to hit the ball properly with the racket. When a player strikes the ball incorrectly, it is usually because they did not hit the ball in the racket’s ideal or sweet spot.

Mixed Doubles:

Mixed doubles is a type doubles tennis match that consists of one male and one female playing on each team.

Net:

Is the horizontal netting stretched across the middle of the court and supported by net posts, measuring 36 inches at the center strap and 42 inches at the net posts.

Net Cord:

Is a cord that passes along and supports the top of a tennis net.

Net Judge:

Net cord judge is an official who is responsible for calling lets on service.

Net Point:

A net point is won or lost by approaching the net, as opposed to a stroke from the baseline.

Net Posts:

Net posts are wooden or metal bars that pull a tennis net taught, ensuring adequate use for gameplay.

No-Ad:

When the game score hits 40-40 or deuce, no-ad scoring eliminates the necessity that a player needs to win by two points. When a game reaches 40-40 under no-ad scoring, the players play a game-ending point.

No-man’s land:

The court area between the baseline and the service line is no man’s land. This playing area is not far enough back to allow for a proper groundstroke, nor is it close enough to the net to allow for a proper volley.

Not Up:

In tennis, a Not Up is a situation in which the player fails to hit the ball before it bounces twice.

Offensive Lob:

An offensive volley is a volley that is usually hit from above the net and is intended to score a point.

Offensive Volley:

An offensive volley is a volley that is usually hit from above the net and is intended to score a point.

On Serve:

“On Serve” simply means that neither player has a “break of serve” at the moment.

Open Era:

Tennis radically changed in 1968, when tournaments became open to amateur and professional players. The time since then is known as the ‘Open Era.’

A grip in which the racket face is tilted upward, away from the court.

Open Racket:

It means to hold the racket so that the strings are facing mostly towards the ceiling, so you’re effectively slicing the ball.

Open Stance:

The open stance is a common feature of modern tennis in which the feet are parallel to the net when hitting.

Open Tournament:

In tennis, “Open” is used to label a certain type of tournament. When the tournament is considered Open, that means there are spots for anyone to qualify.

Out:

A shot that lands wide and/or long outside the playing area.

Overhead:

An overhead is a shot hit over your head on your forehand side with a serve-like action.

Overrule:

An umpire’s decision to overturn a call made by a linesperson

Pace:

Simply put, the term pace in tennis refers to how fast your shot travels after it leaves your racket. In other words, the ball speed.

Pair:

Is a doubles tennis team.

Partner:

The partner refers to one of the two players on a doubles team.

Pass (or passing shot)

Is a stroke that drives the ball to one side and beyond the reach of an opponent.

Percentage tennis:

A safety-first strategy entails attempting to keep the ball in play rather than hitting winners. The goal is to push an opponent to make a mistake by staying in the point for long periods.

Pickup Shot:

See the half-volley shot.

Poach:

Poaching is when, in doubles, the player at the net moves toward the other side of the court to cut off the next shot by your opponents.

Point:

The time between the first successful serve and the point at which the ball goes out of play. It is the smallest scoring unit in tennis.

Point Penalty:

Tennis players that commit more than one code violation may face a point penalty, which means they will lose a point as punishment for their bad behavior.

Puddler:

Puddler is a player who hits a lot of chip shots and drop shots.

Punch Volley:

The punch volley is executed by taking a very short and compact swing. On most volleys, the racquet is never taken back past the shoulders.

Pusher:

A pusher is a type of player that just “pushes” the ball back with no pace but with great control and depth – and they seem to be able to do it forever.

Putaway:

Putaway is a type of offensive shot used to end a point in a favorable position.

Qualies:

Is an abbreviation for qualification rounds or something similar.

Qualification Round:

Qualification rounds are the matches that professional tennis players must win in order to compete in prestigious tennis tournaments. Qualifying simply implies that a player competed in one or more qualifying tournament matches and earned a spot by winning, reserving a qualifying slot.

Qualifier or “Q”:

A player who qualified for a tournament’s main draw by winning the pre-tournament qualifying round.

Qualifying Draw:

The draw for the qualification tournament.

Racket or Racquet:

Is a tennis bat with an oval frame and a taut interlaced network of strings.

Rally:

A tennis rally is a regular sequence of play in which two players hit the ball back and forth consistently over the net.

Ready Position:

All volleys, overheads, and serve returns begin in the ready position. It is also the automatic re-set position after you hit a ball.

Receivers:

The receiver is the player to whom the server serves the ball.

Referee:

The Referee is the expert on all rules and regulations. Referees oversee all parts of a tournament, from managing the draws and scheduling to enforcing the rules and ensuring everything runs smoothly and fairly.

Reflex Volley:

Is a type of volley in which a player intuitively positions his racket to return the ball without having time to plan the shot.

Retriever:

A retriever tries to return every ball and relies on the opponent making mistakes.

Return Ace:

This happens when a receiver returns the ball to the server, who is subsequently unable to hit or make contact with the ball.

Return of Serve Plus One:

A player hits an excellent return of serve and then follows up with a winning shot.

Reverse Twist:

A reverse twist is a serve that has spin causing it to bounce high and to the receiver’s right, off a right-handed player’s racket.

Round:

In an elimination tournament, a round is a series of matches in which the winners advance to the next round.

Round Robin:

In tennis, Round Robin simply refers to a competition in which every player competes against each other.

Means to move aggressively in order to play the ball on the forehand rather than the backhand.

Sandbagger:

Sandbaggers are players who play at the wrong level in order to benefit from easy wins.

Scoring System:

Tennis matches are divided into three phases: a game, a set, and a match. A game is played until a player scores four points. A set is a series of games played until a player wins six games, sometimes 7, in a row. A match is played in best-of-three or best-of-five sets.

Second Flight:

A second flight is the flight of the ball after it bounces.

Second Serve:

A player has two chances to serve a fair serve, the second known as the second serve.

Seed:

Seeds are announced shortly before the draws. They are used to separate the top players in a draw so that they do not meet in the tournament’s early rounds.

Serve:

Is an overhead shot to start each point played from behind the baseline to one side of the center mark.

Server:

The player whose turn it is to serve.

Serve and Volley:

To immediately follow a serve into the net with the intention of winning the point with a volley or a forced error by the opponent. This is an increasingly uncommon strategy in modern tennis.

Serve Plus One:

The serve plus one is a tennis strategy in which you consider the serve and the first shot after the serve to be a package and use the serve to set up the shot you want on the second stroke.

Service Court:

Service courts are two rectangles adjacent to the net on each side of the court.

Service Line:

The service line runs parallel the net and marks the midpoint between the net and the baseline.

Service Line Judge:

A service line judge is an official in charge of evaluating whether a serve lands beyond the service line.

Set:

A scoring unit in which players attempt to win six games. To win a set, a player must be two games ahead when reaching six games or win a game when leading 6-5. If the score reaches 6-6, a tiebreaker is used to decide the set.

Set Point:

A set point happens in tennis when a player or pair is one point away from winning a set.

Shank:

In tennis, a shank is an unintentional misdirected shot. This happens when the ball hits the racket frame and lands beyond of the court’s boundaries.

Shot:

A shot occurs in tennis whenever a player makes contact with the ball.

Sideline:

A line that marks the side boundary of a playing area.

Sideline Judge:

In tennis, a line judge is an official whose primary function is to determine and communicate whether a ball has landed in or out of bounds during a match.

Singles:

Singles is a play format in which two players compete against each other, usually two men or two women.

Singles Court:

This court is used for single matches.

Slice:

Slice refers to a net-skimming shot with underspin and sidespin.

Smash:

A serve-like overhead shot that is hit very hard and down, above the hitter’s head, into the opponent’s side.

Snap Volley:

A snap volley is a volley with added velocity due to wrist motion at impact.

Stop Volley:

Is a soft shot in tennis intended to carry just over the net and out of the opponent’s reach.

Straight Sets:

A match in which a player wins without dropping a set.

Strings:

Strings are the parts of a tennis racket that make contact with the ball.

Stroke:

A way in which a tennis ball is struck.

Sudden Death:

The tiebreak is played in a best-of-nine format, with the final point as a decisive point to win the set.

Sweet Spot:

Every tennis racket swung has a “sweet spot,” which is a place on the face of the racket between the middle and tip that drives the ball with more power and less vibration to the hands — optimum hitting area.

T:

The T on the court is where the service line meets the line that divides the court into two boxes.

Tanking or Tank:

A colloquial term used when a player loses a match on purpose. It can also be used as a match strategy to conserve energy for a later game or set.

Tape:

Is a tennis term for the canvas material covering the top of the net.

Team Tennis:

Team tennis is a type of tennis tournament in which several groups of players compete to win the tournament for their team.

Tennis Ball:

A tennis ball consists of a pressurized rubber core covered with high-quality cloth, usually wool, mixed with up to 35 percent nylon. It weighs around 2 ounces, and yellow/white are the only approved colors.

Tennis Elbow:

Tennis elbow (lateral epicondylitis) is a painful condition that occurs when tendons in your elbow are overloaded, usually by repetitive motions of the wrist and arm.

Topspin:

When a player strikes the ball so that it spins from low to high as it moves forward. Topspin allows a player to strike the ball with more power; the increased spin helps bring the ball down and keep it in play.

Thirty:

Thirty is the second point scored by a player or side in a game. 

Tiebreaker:

A tiebreak is a way of deciding a set when the score is 6-6. Players compete in a first-to-seven point game, with the serve changing after the first point and subsequently every two points. To win a tiebreak, a player must be two points ahead of their opponent.

Top Seed:

The top seed is the player deemed by current rankings as the strongest player in the field.

Touch:

Touch refers to a player’s skill and capacity to hit finessed strokes.

Triples:

Winning singles, doubles, and mixed doubles in a tournament are called triples.

Twist:

A serve hit with a combination of slice and topspin.

Two-handed Backhand:

A backhand stroke in which the non-dominant hand also supports the racquet handle.

Umpire:

The umpire, often known as the chair umpire, is in charge of enforcing the rules throughout a match. 

Underhand serve (or underarm serve):

A serve where the player lobs the ball from under his or her shoulders.

Underspin:

A ball with spin that allows it to spin backward as it moves forward.

Unforced Error:

A shot that is either in the net or out of bounds, resulting in a point being deducted.

Unseeded Player:

A player whose ranking does not qualify them for a protected (seeded) position in the draw.

Upset:

An upset occurs when a lower-ranked competitor defeats a high-ranked player.

Volley:

A shot in which the ball is struck with the player’s racquet before it hits the ground.

Walkover:

A walk-over is given to a player when their opponent withdraws or is unable to play.

Warning:

The umpire may issue a warning to a player for a variety of reasons, the most common of which being a time violation, a racket abuse (breaking a racket) warning, or unsportsmanlike conduct (use of abusive language).

Western Grip:

The Western grip is good for players with a strong baseline game who play on slow courts with a lot of topspin. However, changing grips and hitting shots close to the ground becomes more difficult.

Wide:

A shot that lands beyond the sideline or, in the instance of a serve, beyond the service sideline. Also see long.

Wild Card or “WC”:

If a player is given a wildcard to an event, they are permitted to compete even if their rating was not high enough to secure automatic qualification. Wildcards are frequently offered to young, local players or players who have been sidelined for an extended time due to injury.

Winner:

To play a shot that is impossible for the receiver to return

Wrong-foot:

Playing the ball in an unexpected direction suddenly forces the opponent to change direction.

WTA:

The Women’s Tennis Association (WTA) is the governing body of women’s tennis.