Williams won 37 of 44 points while serving, including 27 of 28 on first serves, and never faced a break point. Twice, the 98th-ranked Czink whiffed completely while trying to return serves.

For every tennis player, the perfect serve is the holy grail. The serve is the most powerful shot in tennis, and the only one that the player has full control over. Great servers such as Pete ...

NEW YORK—For some in tennis, the serve clock was long ... But it may have been Sloane Stephens who made the most prescient serve-clock comment of all when she was asked for her opinion of ...