Tommy Haas rallied to beat fifth-seeded Juan Ignacio Chela of Argentina 6-7 (3), 6-3, 7-6 (5) Tuesday in the first round of the Erste Bank Open.
The 273rd-ranked German, who won the event in 2001, failed to serve out the match at 5-3 in the decider but converted his fourth match point in the tiebreaker.
Haas will next play Aljaz Bedene of Slovenia, who won the opening set against Ivo Karlovic 7-6 (4) before the Croat pulled out with a back injury.
Eighth-seeded Fabio Fognini of Italy advanced after Tommy Robredo of Spain retired with a left leg injury while trailing 7-6 (7), 5-7, 2-1.
Also, 2008 champion Philipp Petzschner of Germany routed Spain's Pablo Andujar 6-2, 6-2, and Daniel Brands of Germany defeated Martin Fischer of Austria 6-7 (3), 6-2, 7-6 (6).