2008 Tennis Masters Cup – Singles
Novak Djokovic defeated Nikolay Davydenko in the final, 6–1, 7–5 to win the singles tennis title at the 2008 Tennis Masters Cup. Roger Federer was the two-time defending champion, but lost in the round-robin. This marks the only instance that he was eliminated before the semifinals at the year-end championships. Rafael Nadal qualified as the world No. 1, but withdrew before the tournament citing a knee injury.