Martin Klizan of Slovakia defeated Austrian wild card Dominic Thiem 6-1, 3-6, 7-5 on Monday in the first round of the Bet-at-Home Cup.
The fifth-seeded Klizan was broken at love while serving for the match at 5-3 but broke Thiem again in the final game of the match.
Filippo Volandri rallied to beat Alessandro Giannessi 1-6, 6-4, 6-3 in an all-Italian match, and Antonio Veic of Croatia routed eighth-seeded Blaz Kavcic of Slovenia 6-1, 6-2.
Attila Balasz of Hungary defeated Martin Fischer of Austria 6-3, 1-6, 7-6 (2) to set up a second-round match against Philipp Kohlschreiber. The top-seeded German, who will play at the London Olympics, had a bye in the opening round of the Austrian clay-court event.