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Gilles Simon reaches semifinals

MARSEILLE, France -- Gilles Simon upset defending champion Juan Martin del Potro of Agentina 6-4, 6-3 Friday to set up an Open 13 semifinal against countryman Jo-Wilfried Tsonga, who saved five match points in a three-set victory against Australia's Bernard Tomic.

Top-seeded Tomas Berdych of the Czech Republic also reached the last four after beating seventh-seeded Jerzy Janowicz of Poland 6-3, 6-7 (0), 6-3. Berdych did not face a single break point and took Janowicz's serve twice.

The third-seeded Tsonga hit 19 aces against Tomic and won 4-6, 6-3, 7-6 (10) to reach the semifinals of the tournament for the third time. He won it in 2009.

In a match that lasted more than two hours, Tomic showed great resilience as the Australian saved eight of nine break points he faced, but couldn't capitalize on his chances in the decider.

Dmitry Tursunov of Russia also advanced by beating Gilles Muller of Luxembourg 7-6 (7), 1-6, 7-5 in his quarterfinal.

Tursunov, a semifinalist at the tournament two years ago, withstood 27 aces from Muller and a second-set thrashing where he dropped serve three times to set up a semifinal against Berdych.

"Playing in qualifying for the third tournament this year, I really didn't expect this," Tursunov said. "I wasn't really looking that far ahead and I think that kind of helped me, I was just trying to play one match at a time."