Already outplayed by Sam Stosur in the U.S. Open final, the last thing Serena Williams needed was to lose a game for yelling during a point. That's exactly what happened early in the second set, leading to an argument between Williams and the chair umpire, a scene less ugly than – but reminiscent of – the American's tirade two years ago at the same tournament. In the end, Stosur beat Williams 6-2, 6-3 Sunday in a surprisingly lopsided upset for her first Grand Slam title.