ROGER FEDERER moved closer to a sixth successive US Open crown after stifling Spanish 14th seed Tommy Robredo 7-5 6-2 6-2 to reach the quarter-finals last night.

World number one Dinara Safina joined former champion Maria Sharapova as a third round casualty on a day of shocks at the US Open.

American teenager Melanie Oudin knocked out former champion Maria Sharapova to continue her amazing run at the US Open.

RUSSIA’S Elena Dementieva and Serbia’s Jelena Jankovic became the first big name casualties at the US Open.

Women’s fourth seed Elena Dementieva became the first big-name casualty of the 2009 US Open when American teenager Melanie Oudin claimed another grand slam scalp today.

Teenage rising star Melanie Oudin stunned Jelena Jankovic with a brilliant fightback to knock the sixth seed out of Wimbledon.