SOFIA, Bulgaria (AP) Top-seeded Roberto Bautista Agut advanced to the semifinals of the Sofia Open by beating eighth-seeded Adrian Mannarino 6-4, 6-3 Friday.
Bautista Agut won 77 percent of his service points and converted two of his five break points.
''It is never easy to start a tournament in the quarterfinals, especially when your opponent has played two matches,'' said Bautista Agut, who had a bye in the first round and advanced with a walkover in the second.
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The Spaniard will next face sixth-seeded Gilles Muller of Luxembourg. Mueller had 14 aces as he rallied from a 5-2 deficit in the first set to beat third-seeded Guillermo Garcia-Lopez 7-6 (6), 6-4.