Seeded No. 6, the French logically won No. 91-ranked Ukrainian Sergiy Stakhovsky in two sets (7-6 , 6-4).
He will face Jo-Wilfried Tsonga, an opponent he has never beaten in three matches.
Jo-Wilfried Tsonga qualified for the quarter Wednesday after getting rid of Russian Nikolay Davydenko (63 ATP) in two tight sleeves, 7/6 [7-4], 7/6 [10-8] after 1h 46 minutes.