Nikolay Davydenko won the first big tournament of his career on Sunday, running down just about every ball and using a consistent serve to beat US Open champion Juan Martin del Potro 6-3, 6-4 to win the ATP World Tour Finals.
Davydenko, who eliminated top-ranked Roger Federer in the semifinals, dominated his service games against Del Potro, losing only five points on serve in the first set.
Del Potro had three chances to break Davydenko, but the Russian saved them all.
Davydenko also reached the final of last year's season-ending tournament for the top eight players in the world, but he lost to Novak Djokovic. That tournament was played in Shanghai.