Victor Hanescu of Romania rallied after losing the first set and beat Jarkko Nieminen 2-6, 6-3, 6-2
Klizan, ranked 212th, won more points than Wawrinka (87-85), but was broken in the 10th game of the opening and final sets.
Story continues below ↓advertisement | your ad hereHanescu reached his first quarterfinal of the year after struggling to cope with Nieminen's powerful serve. Nieminen won 16 of his first 19 service points.
Hanescu took a 3-0 lead in the second set. Nieminen had chances in the third, wasting five break points.
© 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Roddick reaches quarterfinals at Key BiscaynePrimera Liga round-up