Stanislas Wawrinka (back) retires

Updated: July 26, 2013, 3:44 PM ET
Associated Press

GSTAAD, Switzerland -- A day after Roger Federer lost at the Swiss Open citing back pains, Stanislas Wawrinka retired from his quarterfinal match Friday with the same injury.

The second-seeded Wawrinka stopped after a medical timeout more than 2 hours into his match with Feliciano Lopez, who was leading 6-4, 2-6, 4-3.

The 10th-ranked Wawrinka has won only five matches -- all against players outside the top 50 -- in seven visits since reaching the 2005 final of his home tournament.

The fifth-seeded Lopez will face Robin Haase of the Netherlands in the clay-court tournament on Saturday. The 57th-ranked Haase beat 2011 champion Marcel Granollers of Spain 5-7, 6-3, 7-6 (5).

Daniel Brands, who beat Federer, failed to build on that success in losing 6-3, 6-4 to Victor Hanescu. The 2008 Gstaad champion, Hanescu forced one service break in each set.

Mikhail Youzhny will face Hanescu after beating fourth-seeded Juan Monaco of Argentina 5-7, 6-4, 7-6 (7).

The sixth-seeded Russian saved three match points in the tiebreaker.


Copyright 2013 by The Associated Press

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