Nenad Zimonjic and Michael Llodra scraped past eighth seeds Robert Lindstedt and Horia Tecau 7-6(4), 3-6, 10-7 in one hour and 45 minutes.
Llodra and Zimonjic failed to convert any of their five break point opportunities in first set, but win in tie-break game. In second, Lindstedt and Tecau maked one break, but in the third Zimonjic and Llodra raised the level of concentration and won the set without any problems.
Nenad Zimonjic and Michael Llodra will next challenge sixth seeds Mariusz Fyrstenberg and Marcin Matkowski, who scraped past top seeds Bob and Mike Bryan 3-6, 6-4, 12-10 in 77 minutes.
On Wednesday, Zimonjic became the 33rd player in ATP World Tour history (since 1973) to record 500 doubles match wins.