Davydenko continues Prokom roll

July 31, 2007 at 7:10 PM

SOPOT, Poland, July 31 (UPI) -- Defending champion Nikolay Davydenko was a straight-set winner Tuesday in first-round play at the clay-court Orange Prokom Open in Poland.

Davydenko, seeded first in this year's tournament, defeated Andrei Pavel, 6-3, 6-4. Pavel was coming off a runner-up result in last week's tournament in Umag.

Second-seeded Tommy Robredo needed a third set before advancing to the second round with a 6-4, 5-7, 6-1 win over Polish wild-card entry Lukasz Kubot.

But third-seeded Juan Ignacio Chela was routed by Sergio Roitman 6-1, 6-2 and No. 5-seed Agustin Calleri was ousted by Stefan Koubek 0-6, 7-6 (7-3), 7-5. Also, eighth-seeded Potito Starace retired while trailing Boris Pashanski 6-7 (4-7), 6-2, 3-1.

Seventh-seeded Florian Mayer, a finalist in last year's Orange Prokom Open, topped Juan Pablo Brzezicki 6-3, 6-3.

Other first-round winner Tuesday were: Martin Vassallo Arguello, Gilles Simon, r Olivier Patience, Kristof Vliegen and Steve Darcis.

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