Seeded Frenchmen Gilles Simon and Richard Gasquet both won in straight sets Wednesday to reach the Open Sud de France quarterfinals. The second-seeded Simon fired nine aces and saved four break points in his 6-3, 6-2 win against Flavio Cipolla of Italy, while the fourth-seeded Gasquet broke Nikolay Davydenko three times in a 6-3, 6-4 victory. Even though Davydenko is no longer ranked in the world's top 50, Gasquet had remained wary of the former top-five player. “He's not the No. 3 he was a few years ago but he can still dazzle sometimes, and you can easily find yourself a break down against him,” Gasquet said. “So it was important to hold my serve.” Philipp Kohlschreiber of Germany, seeded No. 7, dropped serve twice but served 10 aces to beat Edouard Roger-Vasselin of France 6-4, 7-5. Guillaume Rufin of France also advanced after a 7-6 (5), 6-3 win over fifth-seeded Feliciano Lopez of Spain. Rufin hit 16 aces compared to 13 for Lopez, who lost his serve twice in the second set after the big servers swapped a break each in the first Melzer, Haase advance In Zagreb, Croatia, Jurgen Melzer of Austria upset fifth-seeded Italian Andreas Seppi 6-2, 6-3 Wednesday to advance to the quarterfinals of Zagreb Indoors tournament. Melzer was a late entry and had to play in qualifiers, but has lost just nine games in his first two matches. Melzer — a 2010 semifinalist — served nine aces against Seppi and converted four of his seven break points. “I am very happy with the way I played so far,” he said. Seventh-seeded Robin Haase from the Netherlands also advanced after rallying to beat Matthias Bachinger from Germany 7-6 (4), 3-6, 6-3. In the remaining first-round matches, Slovenian wild card Grega Zemlja beat Croat Antonio Veic 7-6 (5), 7-6 (6), Dudi Sela of Israel defeated Andreas Beck of Germany 3-6, 6-3, 6-2, and Guillermo Garcia-Lopez of Spain ousted Daviel Evans of Britain 6-4, 1-6, 6-1.