2009 ATP World Tour Finals – Singles
| Singles | |
|---|---|
| 2009 ATP World Tour Finals | |
| Champion |
 Nikolay Davydenko
|
| Runner-up |
 Juan Martín del Potro
|
| Final score | 6–3, 6–4 |
Novak Djokovic was the defending champion, but was eliminated in the round robin stage.
Nikolay Davydenko won in the final 6–3, 6–4 against Juan Martín del Potro.
Andy Roddick qualified for the tournament, but withdrew due to a left leg injury.
Standings are determined by: 1) Number of wins; 2) Number of matches; 3) In two-players-ties, head-to-head records; 4) In three-players-ties, percentage of sets won, or of games won; 5) Steering Committee decision.
Standings are determined by: 1) Number of wins; 2) Number of matches; 3) In two-players-ties, head-to-head records; 4) In three-players-ties, percentage of sets won, or of games won; 5) Steering Committee decision.
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