Delbonis knocks off defending Gstaad champ

Federico Delbonis continued his strong recent play, eliminating defending champ Thomaz Bellucci in the first round of the Swiss Open on Tuesday.

Delbonis entered this week's event off a runner-up finish in Hamburg. He stunned Roger Federer in the semifinals last weekend before falling to Fabio Fognini in the championship match.

The 22-year-old Argentine came away with a 7-5, 7-6 (7-2) triumph over Bellucci, who also won this tournament in 2009 in addition to last year's title. The Brazilian was also a first-round loser last week in Hamburg.

Spain's Roberto Bautista Agut was the only seeded player in action Tuesday and posted a 6-2, 6-3 victory over Swiss wild card Henri Laaksonen. The eighth- seeded Bautista Agut will next face Romania's Victor Hanescu, a 7-6 (8-6), 6-2 winner Tuesday against German qualifier Dustin Brown.

Three other Spaniards -- Guillermo Garcia-Lopez, Pablo Andujar and Daniel Gimeno-Traver -- also advanced with wins Tuesday.

Garcia-Lopez topped Romania's Adrian Ungur in three sets and will play fourth- seeded Juan Monaco in the second round, while Andujar dropped just three games in a rout of Romanian qualifier Victor Crivoi. Andujar will face sixth-seeded Mikhail Youzhny in round two.

Gimeno-Traver eased past Frenchman Kenny De Schepper in straight sets to earn a second-round date with second-seeded Swiss favorite Stanislas Wawrinka.

Also, Dutchman Robin Haase toppled Brazilian qualifier Joao Souza and will next play third-seeded Janko Tipsarevic in the second round. Tipsarevic was last year's runner-up to Bellucci.

Germany's Daniel Brands went the distance to knock off Swiss wild card Marco Chiudinelli and will take on an even bigger Swiss name in the second round, as the top-seeded Federer awaits.

Federer is playing this event for the first time since winning the title in 2004.