A foot fault in doubles is called on the server, not the server’s partner. The rule is the same as in singles: while delivering the serve, the server must keep both feet behind the baseline and within the permitted area between the center mark and the sideline.
Knowing the details can prevent arguments on court. It also helps you fix common serving habits, such as stepping on the baseline or drifting too far sideways before contact.
What counts as a foot fault in doubles?
Under the Rules of Tennis, a foot fault is a service fault. It happens if, during the service motion, the server breaks one of the foot-position rules. In doubles, the server may stand anywhere behind the baseline between the center mark and the sideline that marks the outside edge of the doubles court. The doubles alley is included in that area.
During the delivery, the server must not:
- Touch the baseline or the court inside the baseline with either foot.
- Touch the area beyond the imaginary extension of the relevant sideline.
- Touch the imaginary extension of the center mark.
- Change position by walking or running, although small movements that do not materially change the server’s position are allowed.
The restriction applies from the start of the service motion until the racket contacts the ball, or until the server misses the ball while trying to hit it. The server’s feet do not have to stay still: a normal rocking motion or a small adjustment is not automatically a fault. The key is whether the player breaks one of the rules above.
Does doubles change where the server can stand?
The basic foot-fault rule is the same in singles and doubles, but the court’s outer boundary is different. In doubles, the server can use the space behind the baseline between the center mark and the doubles sideline. That means a server may stand behind the doubles alley, as long as neither foot goes outside the permitted boundary.
For example, a right-handed player serving from the deuce court can position themselves behind the baseline anywhere from the center-mark extension to the doubles-sideline extension. They do not have to stand directly behind the service box they are aiming for. But if a foot touches the center-mark extension or crosses beyond the doubles sideline’s extension during the delivery, that is a foot fault.
The server’s partner does not have to follow these foot-position rules. They can stand elsewhere on their side of the court, provided they do not interfere with the opponents. Only the player serving can commit a foot fault.
When does the service motion begin?
This can be a source of confusion in casual doubles. The rule applies during the service motion, not every time the server is standing behind the baseline. A server may adjust their position before beginning the motion. Once the delivery starts, however, they cannot walk or run to gain position or touch a restricted line or area with a foot.
A player who tosses the ball and lets it fall without trying to hit it has not necessarily served or committed a foot fault. But if they begin the delivery, step on the baseline, and then hit the ball, the serve is a fault even if the ball lands well inside the service box.
What is the penalty for a foot fault?
A foot fault counts as a service fault, just like a serve that lands outside the correct service box. If it happens on the first serve, the server gets a second serve. If it happens on the second serve, the serving team loses the point.
There is no special replay for a foot fault. In doubles, the opponents win the point when the server foot-faults on a second serve. The team’s service order and the receiving team’s positions do not change because of the call; play continues according to the regular rotation.
Common doubles foot-fault examples
- Stepping on the baseline: A server’s back foot brushes the baseline before the racket hits the ball. That is a fault, even if the contact is slight.
- Stepping into the court: The front foot lands inside the baseline during the delivery. That is also a fault.
- Moving too far sideways: A server shifts beyond the doubles-sideline extension or touches the center-mark extension during the motion.
- Taking a small setup step: A slight movement that does not materially change the server’s position is not automatically a foot fault. Walking or running into a new position during the delivery is not allowed.
- The partner moves early: The server’s partner shifts position before the serve. That is not a foot fault, because the restriction applies to the server’s feet.
How to handle foot-fault calls in a match
In an officiated match, the chair umpire or an assigned official makes the call. In a casual or unofficiated match, avoid guessing based on how close a player stands to the line. A foot fault should be called only when the violation is clear and visible. If a player is unsure, a calm conversation between points is better than a disputed call during a rally.
To reduce the risk, check your position before serving and keep a little space behind the baseline. A simple practice drill is to serve from your usual spot while a partner watches your feet from the side. If you often step forward, try starting farther back and focus on keeping your feet behind the line until contact.
Frequently Asked Questions
Can a doubles server stand in the alley?
Yes. The server can stand behind the baseline in the space between the singles and doubles sidelines. They must stay within the doubles court’s outer sideline extension during the service motion.
Can the server’s partner be called for a foot fault?
No. The foot-fault rule concerns the player delivering the serve. The partner may move or stand in a different position, as long as they do not interfere with the opponents.
Does a foot fault on a first serve lose the point?
No. It counts as the first service fault, so the server gets a second serve. A foot fault on the second serve loses the point for the serving team.
Is a small movement before the serve a foot fault?
Not by itself. A player can adjust their stance before starting the delivery, and slight movements that do not materially change their position are allowed. Walking or running during the service motion, or touching a restricted line or area, is a fault.
Final Thoughts
Doubles does not have a separate foot-fault rule: the server must keep both feet behind the baseline and inside the allowed side-to-side limits until the racket meets the ball. The main doubles difference is that the permitted area extends to the doubles sideline, including the alley. Keep your setup controlled, know where the boundary lines run, and a foot-fault call is much less likely to decide a point.
