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Kevin Anderson (tennis)

At 34, even Federer wowed by quality of his play at US Open

Even Roger Federer is wowed by how well he's playing at 34 — and the ease with which he's winning at this U.S. Open.

Federer is into his 10th semifinal at Flushing Meadows, and record 38th at all major tournaments. To get back to his first final in New York since 2009, he'll have to beat someone he knows quite well: Swiss Olympic and Davis Cup teammate Stan Wawrinka.

The No. 2-seeded Federer and No. 5 Wawrinka won quarterfinals about as handily as can be Wednesday night.

Federer never faced a break point, compiled a remarkable 50-8 advantage in winners, and needed less than 1 1/2 hours to dismiss 12th-seeded Richard Gasquet of France 6-3, 6-3, 6-1 in Arthur Ashe...