Nikolay Davydenko pulls off upset

CINCINNATI -- Thirteenth-seeded Alexandr Dolgopolov became the first player upset at Cincinnati, falling to 50th-ranked Nikolay Davydenko 6-1, 6-1 in the first round Monday.

Davydenko, ranked as high as No. 3 on the tour in 2006 and 2007, needed just 52 minutes to oust Dolgopolov, who was coming off winning the Citi Open in Washington on Aug. 5.

Dolgopolov, a Ukrainian ranked 16th in the world, committed 26 unforced errors to just three by his Russian opponent.

Twelfth-seeded Marin Cilic of Croatia survived a challenge from qualifier Sergiy Stakhovsky before advancing with a 6-3, 4-6, 6-4 win.

In other men's action on the tournament's first full day, Andreas Seppi of Italy beat the Netherlands' Robin Hasse 6-4, 6-4; qualifier Jesse Levine beat Donald Young 6-4, 7-6 (2) in a matchup of Americans; Taiwan's Yen-Hsun Lu eliminated Poland's Lukasz Kubot 6-3, 6-0; and American wild card Brian Baker outlasted Philipp Kohlschreiber of Germany 7-6 (7), 7-6 (4).

Also, Serbian Victor Troicki beat Croatian qualifier Ivan Dodig 6-4, 7-5, Spain's Pablo Andujar cruised past Australian qualifier Marinko Matosevic 6-4, 6-3, German Florian Mayer defeated qualifier Fabio Fognini of Italy 7-5, 6-2, and Uzbekistan's Denis Istomin eliminated France's Julien Benneteau 6-3, 6-1.

Stanislas Wawrinka of Switzerland needed three sets to get by French qualifier Paul-Henri Mathieu 6-2, 3-6, 6-1. And Lleyton Hewitt advanced with a 6-4, 6-4 win over Russian Mikhail Youzhny.

The women's tournament got under way with a mild upset as 66th-ranked Timea Babos, a 19-year-old Hungarian, knocked out 39th-ranked Varvara Lepchenko of the United States 7-6 (4), 6-4. Babos lost in the final round of qualifying Sunday but reached the main draw when Ana Ivanovic withdrew because of a toe injury.

Eleventh-seeded Dominika Cibulkova of Slovakia earned a routine 6-3, 6-4 win over qualifier Akgul Amanmuradova of Uzbekistan.

In other women's action, No. 11 seed Dominika Cibulkova of Slovakia earned a 6-3, 6-4 win over qualifier Akgul Amanmuradova of Uzbekistan; Italy's Mona Barthel beat Spain's Maria Jose Martinez Sanchez 6-0, 6-4; Anabel Medina Garrigues of Spain defeated Romanian Simona Halep 6-3, 6-0; Germany's Julia Goerges won in straight sets over Israel's Shahar Peer 6-3, 6-3; and Sweden's Johanna Larsson beat Australia's Casey Dellacqua 6-1, 6-3.

Also, wild card Camila Giorgi eased past fellow Italian Francesca Schiavone 6-1, 6-3, and Eleni Daniilidou of Greece outlasted Vania King of the United States 6-3, 2-6, 7-6 (6) in a matchup of qualifiers.

In the women's first completed night match, qualifier Urszula Radwanska of Poland advanced with a 6-2, 6-4 win over Ksenia Pervak of Kazakhstan.

Information from The Associated Press contributed to this report.