Dubai - Third-seeded Tomas Berdych reached the quarter-finals of the Dubai Championships on Wednesday, overcoming a gritty challenge from former No. 3-ranked Nikolay Davydenko 6-3, 7-6 (5).
Berdych is one of only three seeds left in the tournament, after eighth-seeded Ernests Gulbis of Latvia was upset by Sergiy Stakhovsky of Ukraine, 6-3, 5-7, 6-1.
In the other early match, Frenchman Richard Gasquet overcame a 5-2 deficit in the second set to beat Ukrainian qualifier Sergei Bubka 6-2, 7-5.
Second Round Results:
Richard Gasquet (FRA) bt Sergei Bubka (UKR) 6-2, 7-5
Florian Mayer (GER) bt Andrey Golubev (KAZ) 6-3, 6-4
Tomas Berdych (CZE x3) bt Nikolay Davydenko (RUS) 6-3, 7-6 (7/5)
Philipp Petzschner (GER) bt Philipp Kohlschreiber (GER) 6-0, 4-6, 6-2
Sergiy Stakhovsky (UKR) bt Ernests Gulbis (LAT x8) 6-3, 5-7, 6-1