American Serena Williams advanced to the third round of the U.S. Open with a 6-2, 6-4 victory over María José Martínez Sánchez. The No. 4 Williams fell behind 2-0 in the second set but roared back for the straight sets second round win. Serena smashed 32 winners against the Spaniard but 24 unforced errors kept things moderately close in the second round match at Arthur Ashe Stadium. While Andy Roddick was busy retiring, the gold medalist Williams emphatically put away Sanchez to advance.
Roger Federer lead off the evening session on Ashe with a straight set win of his own. Federer defeated German Bjorn Phau, 6-2, 6-3, 6-2, to move on to the third round in convincing fashion. Federer hit 15 aces and 44 winners in a match that lasted just an hour and a half. The men's legend is looking for his sixth win in Flushing, and he's been in good form through the first two rounds.