Venus and Serena Williams overcame two service breaks in the second set Wednesday to advance to the U.S. Open quarterfinals with a 6-1, 7-6 (3) victory over Anastasia Pavlyuchenkova and Lucie Safarova.
The Williams sisters, who have combined for 13 Grand Slam doubles titles, will play the defending champion and top-seeded Italian team of Sara Errani and Roberta Vinci. The Italians beat the sisters in three sets in the Australian Open quarterfinals.
The sisters lost only three points on their serve in the first set, but both sisters got broken once in the second. The second break came against Serena when she was trying to serve out the match at 5-4.
The Williams' won the first five points of the tiebreaker, then closed it out on Serena's service winner.