Winston-Salem - Fifth seed Nikolay Davydenko was far from pleased with his form even after beating American qualifier Michael Russell 6-2, 6-2 here on Tuesday to reach the third round of the ATP Winston-Salem Open.
The 30-year-old, who has slid to 39 in the world from a high of third, claimed his 21st career title last May in Munich but had not managed to make it into the third round of a tournament since.
He will next face either ninth seed Sergiy Stakhovsky of the Ukraine or Kazak Andrei Golubev in a tournament that has fading former world No 1 Andy Roddick as top seed.
Davydenko was far from pleased with his 74 minute win over Russell, who at 33 was the oldest player in the draw.
"It was pretty tough," said the Russian, who committed four double-faults and failed to serve an ace.
"We are preparing for the US Open and it's a nervous time.
"I'm still trying to feel the court and the ball. It was also a bit windy today.
"I need confidence,I was just fighting for every point. I ran and my legs felt good but I was only pushing the ball. I had too many mistakes."
The Russian said he will work in the next match to "clean up my forehand. I made too many errors from the baseline. I need to improve a lot before the next match."
Dutch tenth seed Robin Haase, winner on clay this month in Kitzbuehel, opened his hardcourt campaign at the last possible moment but produced an easy 6-4, 6-1 over veteran American James Blake.
Both men served six aces, with Haase breaking five times while saving nine of the ten break points he faced in a rout lasting a shade over one hour.
Belgian Steve Darcis mounted a second-round comeback to turn the tables on 11th seed Dmitry Tursunov 3-6, 6-1, 6-3 while Argentine seventh seed Juan Monaco beat Germany's Tobias Kamke.