Nikolay Vladimirovich Davydenko born June 2, 1981 in Severodonetsk, Ukrainian SSR, Soviet Union) is a Russian tennis player. Davydenko's best result in a Grand Slam tournament has been reaching the semi-finals, which he has done on four occasions - twice each at the French Open and the U.S. Open. He was runner-up at the 2008 Tennis Masters Cup and then went one better the next year winning the 2009 ATP World Tour Finals. He has also won 3 Masters Series shields.
Source : Wikipedia.com