Tomas Berdych knocks Roger Federer out of US Open

Number six seed Berdych won 7-6, 6-4, 3-6, 6-3 and will now meet Andy Murray in the semi-finals.

Number one seed Federer hasn't played since Saturday after his fourth round opponent Mardy Fish had to withdraw with health issues.

The six-foot-five Berdych pounded serves and groundstrokes at Federer, whose forehand was not working to its usual efficiency.

This was the Czech's fourth victory in his last seven meetings against Federer, including in the 2010 Wimbledon quarterfinals, Kazinform has learnt from the Guardian.

Afterwards Federer said: "I don't think the schedule was a problem for me. I should come in here with tons of energy and ready to go. Who knows, you know, if you get that day, that match in with Fish, come through with more confidence, maybe the first three matches didn't quite give me that. Who knows? I don't put that down as a negative, really."

"I just didn't come up with the goods tonight. It was unfortunate."