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Roddick tries again against foe Federer

KEY BISCAYNE, Fla. - Andy Roddick's winning percentage against Roger Federer could be worse.

Instead of .063, it could be .000.

Yes, Roddick has lost to his nemesis 15 times, including their past 11 meetings. And yes, Roddick has won only six of the 43 sets they've played.

But Roddick beat Federer once and expects to do it again, maybe even tonight. They'll play in the quarterfinals of the Sony Ericsson Open.

'It will be good,' Roddick said, and he almost sounded convincing. 'I always look forward to it, and I do believe that I'll beat him one of these times. Hopefully that will be this time around.'

The top-ranked Federer will be a heavy favorite, however. Still seeking his first title this year, Federer looks highly motivated and has yet to lose a set in three rounds, while Roddick twice had to overcome one-set deficits.

Plus, a 15-1 record gives a fellow a slight psychological edge.

'I have a definitely a very, very good record against him,' Federer said.

Roddick became the lone remaining American in the men's draw when James Blake lost in the quarterfinals Wednesday to Rafael Nadal, 3-6, 6-3, 6-1. Jelena Jankovic and Vera Zvonareva earned berths in the women's semifinals.