PARIS (AP) — Novak Djokovic won his 15th straight match Friday and Roger Federer avenged a loss last week to Juan Martin del Potro, setting up a semifinal match between the two at the Paris Masters.
Djokovic beat Stanislas Wawrinka 6-1, 6-4, and edged Del Potro 6-3, 4-6, 6-3.
Top-seeded Rafael Nadal also moved into the semifinals with a 6-4, 6-1 victory over Richard Gasquet. Nadal will face defending champion David Ferrer, a 4-6, 7-5, 6-3 winner over Tomas Berdych.
Federer earned his first victory over a top-10 player since January, when he outlasted Jo-Wilfried Tsonga in the quarterfinals of the Australian Open.
"That's definitely good for my confidence, because those are the kind of wins I need right now," Federer said. "I'm happy now I won against a top-10 again, especially just before London where I will have to play against three top-10 players in a row."
Federer lost to del Potro in last weekend's Swiss Indoors final, but the 17-time Grand Slam champion played nearly flawless tennis in the first set, making 17 winners and only four unforced errors.
Del Potro fought back in the second set, saving a break point in the opening game before converting his second break chance at 5-4 to level the match when the fifth-seeded Federer netted a forehand.
In the deciding set, Del Potro sent a forehand into the net to drop serve at 3-3 and Federer won the match when the Argentine hit a forehand long.
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