US Open - Roger Federer Crash Out To Tommy Robredo In Straight Sets

It was not a nice day for Roger Federer, as the 17-times grand slam champion was eliminated 7-6(3) 6-3 6-4 in less than two-and-a-half hours to end hopes of a blockbuster showdown with great rival Rafa Nadal in the quarter-finals.

The Swiss's erratic display included a most unFederer-like 43 unforced errors and left 14 of 16 break points going begging at Louis Armstrong Stadium.

"Confidence takes care of all the things you don't usually think about," Federer told reporters, his stinging defeat reminiscent of his shock second-round exit at Wimbledon two months before.

"Maybe my consistency is just not quite there yet. Maybe on a daily basis, set-by-set or point-by-point basis, maybe that's something that has been difficult for me.

"Maybe that was one of the reasons why I lost today, playing up and down.

"I kind of self-destructed, which is very disappointing."