PORTSCHACH, Austria, May 22 (UPI) --
The top three seeds, led by Nikolay Davydenko
, advanced in Thursday's quarterfinals at the Hypo Group International tennis tournament in Portschach, Austria.
Davydenko, the top seed, had to win two times because of the tournament's rain-disrupted schedule this week.
First, he beat 6-foot-9 inch American John Isner, 6-2, 6-7 (6-8), 6-3, and followed with a 6-3, 1-6, 6-3 victory against sixth-seeded Andreas Seppi of Italy.
His semifinal opponent, fellow Russian Igor Kunitsyn ousted Slovenia's Blaz Kavcic, 6-1, 6-4, and Austrian crowd favorite Jurgen Melzer, 6-4, 3-6, 6-3.
Elsewhere, No. 2 seed Juan Monaco of Argentina beat Czech Jiri Vanek, 6-2, 6-2, and American Robby Ginepri, 7-5, 7-6, (7-3); while Croat Ivan Ljubicic, the third seed, needed to save six match points before downing Spaniard Daniel Gimeno-Traver, 6-3, 4-6, 7-6, (8-6).
Six second-round matches and all four quarterfinals had to be played on Thursday after rain had forced numerous postponements.