The Latest: Serena Williams easily into US Open 4th Rd

NEW YORK (AP) — The Latest on the U.S Open tennis tournament (all times local):
3:45 p.m.
Serena Williams used a seven-game run midway through the match to grab control and moved into the U.S. Open’s fourth round for the 18th consecutive appearance with a 6-3, 6-2 victory over Karolina Muchova.
Williams had a bit of shakiness with her serve, double-faulting seven times.
Otherwise, she played well, and went from trailing 3-2 at the outset to grabbing the opening set and a 3-0 lead in