Samantha Stosur clinched her first grand slam title at the US Open today with a sensational 6-2 6-3 victory over favourite Serena Williams in a match that will be remembered for another moment of controversy involving the American.

Williams had hoped to make the headlines for the right reasons but instead a confrontation with umpire Eva Asderaki showed her in a very unflattering light.

The incident occurred in the opening game of the second set when Asderaki awarded a point against the American and Williams was then clearly heard aiming abuse at the umpire.

The 29-year-old is still playing under a suspended ban for another incident at Flushing Meadows two years ago when she abused a line judge and was penalised a point that directly led to her semi-final loss to Kim Clijsters.

What it did not detract from, though, was the performance of Stosur, who played near flawless attacking tennis to romp to victory in an hour and 13 minutes.