MARSEILLE, France (AP) -- Third-seeded Ernests Gulbis of Latvia reached the Open 13 quarterfinals on Thursday after a hard-fought 6-3, 5-7, 6-4 win against Roberto Bautista Agut of Spain, while fourth-seeded Andreas Seppi of Italy lost 7-6 (3), 6-4 to Michael Llodra of France.
Gulbis had 23 aces but needed more than two hours to win, while Seppi dropped his serve twice against Llodra, who had 14 aces.
Germany's Jan-Lennard Struff also secured an upset, beating seventh-seeded Julien Benneteau 4-6, 7-6 (3), 6-3.
Fifth-seeded Ivan Dodig of Croatia, No. 6 Edouard Roger-Vasselin of France, and No. 8 Nicolas Mahut of France progressed.
Dodig beat Germany's Tobias Kamke 6-7 (4), 6-0, 6-3, Roger-Vasselin advanced with a 7-6 (2), 6-4 win against Sergiy Stakhovsky of Ukraine, and Mahut won 7-6 (5), 6-3 against Ricardas Berankis of Lithuania.
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