Janko Tipsarevic, who won in Gstaad last year, fell to Robin Haase 6-2, 6-2 in the second round.

GSTAAD, Switzerland (AP) -- Third-seeded Janko Tipsarevic was upset by Robin Haase 6-2, 6-2 Thursday at the Swiss Open.

Tipsarevic had six double-faults in the second-round loss.

Two former Swiss Open champions advanced to the quarterfinals.

Marcel Granollers, the 2011 winner, beat Federico Delbonis 6-2, 7-5, and 2008 champion Victor Hanescu led Roberto Bautista 7-6 (2), 3-2 when the Spaniard retired with a back injury.

Top-seeded Roger Federer will play his first match in Gstaad since 2004, when he faces 55th-ranked Daniel Brands at the clay-court event.

Federer beat Brands last week in the second round in Hamburg, Germany.

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