Montpellier, France (SportsNetwork.com) - German Phillip Kohlschreiber was a hard-fought second-round winner Thursday at the Open Sud de France tennis event.

The No. 3 seed came from behind to beat Frenchman Paul-Henri Mathieu 3-6, 7-6 (7-5), 6-4 at Montpellier Arena. Kohlschreiber pumped out 19 aces and saved 11-of-13 break points against the 2002 champion Mathieu.

The 31-year-old Kohlschreiber goes on to face seventh seed Joao Sousa of Portugal for a place in the semifinals.

Another second-round result saw Belgian qualifier Steve Darcis douse veteran Finnish left-hander Jarkko Nieminen, 6-2, 7-6 (7-3).

The 2015 Montpellier champion will earn $90,000.