It will be Williams vs. Williams in fourth round of Wimbledon Championships

Serena Williams erased three breaks in the final set today to stave off an upset bid by British home favorite Heather Watson in the third round of Wimbledon.

Williams was broken twice to trail 3-0 in the decider before turning things around, winning 6-2, 4-6, 7-5 to keep alive her bid for a calendar-year Grand Slam.

Williams went up 4-3 in the final set only to be broken again in the ninth game, giving Watson a chance to serve out the match. Williams broke right back again, however, held at love and then converted her third match point.

The 59th-ranked Watson had the partisan Centre Court crowd roaring throughout but fell short of becoming the first British woman to beat a No. 1 since Sue Barker defeated Chris Evert in Boston in 1979.

Williams will next face big sister Venus in the fourth round.