SOPOT, Poland, Aug. 1 (UPI) --
Seeded players Jose Acasuso of Argentina and Igor Andreev
of Russia were among Monday's first-round winners at the Idea Prokom Open in Sopot, Poland.
Acasuso, last year's runner-up, defeated Czech Jiri Vanek 7-5, 4-6, 7-5. Andreev beat Spaniard Guillermo Garcia-Lopez 6-2, 6-7 (4-7), 6-2.
Former French Open champion Albert Costa advanced with a 7-5, 6-3 win over German Philipp Kohlschreiber.
This week's top seeds are French Open runner-up Mariano Puerta and last week's Umag champion Guillermo Coria, who will play former world No. 1 and three-time French Open winner Gustavo Kuerten in the first round.
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