Federer beats Struff, Nishikori quits Gerry Weber Open
HALLE, Germany (AP) Top-seeded Roger Federer began his bid for a ninth title at the Gerry Weber Open with a routine 6-4, 7-6 (3) win over wild card Jan-Lennard Struff on Wednesday.
Federer never faced a break point and fired 15 aces to reach the second round.
Second-seeded Kei Nishikori pulled out with a rib injury. Nishikori reached the second round and was due to face Florian Mayer on Wednesday but told organizers that he was unable to play. Mayer advanced to the quarterfinals with a walkover.
In other first-round matches, eighth-seeded Philipp Kohlschreiber defeated Marcel Granollers 6-2, 7-6 (4), hitting 39 to 24 winners, while Teymuraz Gabashvili beat Paolo Lorenzi 6-1, 6-4.
In a second-round match, Alexander Zverev advanced to the quarterfinals when Benjamin Becker retired with a back injury with Zverev leading 7-5, 3-0. Zverev lost the first four games of the match but recovered against his German opponent.