Jurgen Melzer opened his quest for a third straight title at the Erste Bank Open on Thursday with a 7-5, 6-1 win over Guillermo Garcia-Lopez of Spain.
Also, Tommy Haas of Germany reached his first ATP tour quarterfinal in more than two years by defeating Aljaz Bedene of Slovenia 4-6, 6-4, 6-1 in the second round.
The third-seeded Melzer, who had a bye in the first round, held serve throughout and didn't face a break point until in the third game of the second set.
''I did not start well in the match but I served well so I could rely on that,'' the Austrian said. ''After the first couple of games, I felt more secure and (Garcia-Lopez) started to make some mistakes.''
Melzer's match was initially scheduled for Wednesday but he asked organizers for an extra day off to rest a right thigh injury.
''I felt it two or three times in the match, but I'm happy with how it is now,'' said Melzer, who will play sixth-seeded Kevin Anderson in the quarterfinals.
The former second-ranked Haas, who missed all of last season because of hip and elbow surgery, started to serve better after losing the opening set and finished with 10 aces. The 2001 Erste Bank champion will play No. 2 seed Juan Martin Del Potro for a place in the semifinals.
Also, the 182nd-ranked Daniel Brands of Germany upset fourth-seeded Radek Stepanek of the Czech Republic 6-4, 7-6 (4), and next plays Steve Darcis of Belgium, who downed Austrian wild card Dominic Thiem 6-2, 6-2.
Fellow Belgian player Xavier Melisse rallied to beat the eighth-seeded Fabio Fognini 6-7 (3), 6-3, 6-3 and set up a quarterfinal match against either top-seeded Frenchman Jo-Wilfried Tsonga or Jarkko Nieminen of Finland.