Kitzbuehel, Austria - Simone Bolelli of Italy defeated second-seeded Florian Mayer of Germany 6-2, 7-6 (7/4) to reach the quarter-finals of the Bet-at-Home Cup on Wednesday.
Mayer was looking for his third straight quarterfinal after reaching the last eight at Wimbledon and Hamburg.
Bolelli will next play Martin Klizan, the fifth-seeded Slovak who defeated countryman Pavol Cervenak 6-4, 6-4.
Lukas Rosol of the Czech Republic beat Antonio Veic of Croatia 6-3, 5-7, 6-3 to set up a quarter-final against either top-seeded Philipp Kohlschreiber of Germany or Attila Balazs of Hungary.
Results on Wednesday from the Bet-at-Home Cup, an ATP Tour event on outdoor clay at the Mercedes-Benz Sportpark (seedings in parentheses):
Martin Klizan (5), Slovakia, def. Pavol Cervenak, Slovakia, 6-4, 6-4.
Lukas Rosol, Czech Republic, def. Antonio Veic, Croatia, 6-3, 5-7, 6-3.
Simone Bolelli, Italy, def. Florian Mayer (2), Germany, 6-2, 7-6 (7/4).
Wayne Odesnik, United States, leads Jurgen Zopp, Estonia, 5-7, 7-5, 3-0, susp., rain.
Attila Balazs, Hungary, leads Philipp Kohlschreiber (1), Germany, 3-0, susp., rain.