Earlier, Daniel Brands of Germany beat Andreas Haider-Maurer 6-4, 7-6 (5) despite the Austrian serving 16 aces. The 57th-ranked Brands managed one break in the opening set against the 2010 finalist and held serve throughout to set up a second-round match against top-seeded former champion Jo-Wilfried Tsonga.
Dominic Thiem, playing in only his second ATP event this year, defeated Daniel Gimeno-Traver of Spain 6-4, 5-7, 6-4. The 20-year-old Austrian reached the second round for a third straight year and will play either sixth-seeded Gael Monfils or Marinko Matosevic of Australia.
Also, Michael Russell of the United States failed to convert any of his 13 break points in a 6-3, 6-4 loss to qualifier Mirza Basic of Bosnia-Herzegovina; Ruben Bemelmans of Belgium had 10 aces while beating Jan Hajek of Czech Republic 6-2, 6-0; and Slovakia's Lukas Lacko defeated Austria's Gerald Melzer, brother of former two-time champion Jurgen, 7-6 (5), 6-1.