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 ...

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, ...

The Australian Open and U.S. Open already had eliminated line judges and only have chair umpires on court ... service.” ...

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.