Where the server puts his foot onto or over the Baseline before hitting the ball. If performed on a 1st serve, you will only have your 2nd serve remaining. If performed on your 2nd serve you lose the point.
A server is foot-faulted if one of his feet touches or passes over the end-line while serving. Any other player will have a foot fault called against him if either foot passes the centre-line into the opposing court.
a fault caused by the server stepping into the tennis court
An illegal serve caused by the server stepping on or over the baseline before hitting the ball.
Incorrect positioning of the server's feet, resulting in a fault.
It occures if the player steps on or over the baseline while serving, before hitting the ball.
Standing on or over the service court boundary line by either receiver/server
A serve that is unacceptable because the server's foot was not totally inside the service box up to the point at which contact was made with the ball.
A foot fault occurs when the bowler does not have one foot over the mat on release of the bowl. Foot may be on the mat or in the air.
If the server's foot enters the court before service is completed.
Usually a fault caused by the server's foot entering the court before the racket contacts the ball. It is also a foot fault if any part of the server's foot is on the wrong side of the center mark, or the server is walking or running while delivering the serve. See also serve.
Illegal serve in which a server's foot touches the area outside of the service area during serve, or, in doubles, when the server's partner is not in the service box during the serve.
A service fault that occurs when the server steps onto or beyond the baseline, sideline, or center line mark before striking the ball.