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Already being 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, pulling off a 6-2, 6-3 upset Sunday for her first Grand Slam title.

Stosur became the first Australian woman to win a major championship since Evonne Goolagong Cawley at Wimbledon in 1980.

But the highlight of Stosur's career is likely to be remembered for 13-time major champion Williams' latest dispute with an official at Flushing Meadows.