NEW YORK—For some in tennis, the serve clock was long awaited ... If it’s a tiebreaker, have the ball kids thrown the balls to the other side of the court? Over the course of the Open ...

LONG BALL Step up to the baseline as you would to serve, but with a tennis ball in your racquet hand. Throw the ball over the net to the proper box. Good height over the net plus a long throw ...

For every tennis player ... and physically to ensure they maintain their serve under intense pressure? An illustration of the speed of the ball during the fastest serve recorded at Wimbledon ...