Caroline Wozniacki brought fellow teenager Melanie Oudin's giant-killing run at the US Open to an end under the lights at Arthur Ashe Stadium last night.

British number one Andy Murray hailed his victory over Stanislas Wawrinka at the US Open last night as the best performance of his grand slam career as he marched into quarter-finals in emphatic style.

Roger Federer will have to wait another day to try to tame a pro-Andre Agassi crowd and advance to the semi-finals of the US Open.

Top seed Roger Federer remains on course to win his third Grand Slam of the year after advancing to the quarter-finals at Flushing Meadows thanks to a walkover.