Misfiring Federer stutters into semis
Roger Federer, far short of his fluent best, beat Spain's Tommy Robredo 6-3, 7-6 7-5 on Tuesday to set up an Australian Open semi-final showdown with Andy Roddick.
The top seed and defending champion struggled against the seventh seed, making a string of unforced errors, but he still did enough at the key moments to extend his winning streak to 34 matches and stay on course for his 10th grand slam title.
Federer was broken twice in the first set before sealing it in 40 minutes and his unforced error count had risen to 22 by the middle of the second.
The world number one raised his game to take the tiebreak 7-2 and made an an early break in the third but Robredo struck back immediately before Federer broke him to seal victory on his second match point in two hours 20 minutes.