The issues are time and place. The umpire at the U.S. Open was right and the tennis pro was wrong. Rule 16 says that the service motion must begin with the server behind the baseline "and within ...

Only players, chair umpires and ball kids will be on the court. Tennis Australia announced Wednesday the introduction of live electronic line calls ... or less for a service.

A tennis racket consists of a lower handle, called a grip, and a frame that contains a tightly wound web of strings. The grip and frame are connected by a neck. While rackets vary in terms of length, ...

Line umpires work on court as part ... cover the centre service line, and then move to one of the sidelines after the serve. Line umpires are a requirement for professional tennis games.

Electronic line calling (ELC) arrives on clay courts, revolutionizing tennis officiating with precision but sparking debate ...