1991 ATP Tour World Championships – Singles
| Singles | |
|---|---|
| 1991 ATP Tour World Championships | |
| Champion |
 Pete Sampras
|
| Runner-up |
Jim Courier
|
| Final score | 3–6, 7–6(7–5), 6–3, 6–4 |
Andre Agassi was the defending champion, but Jim Courier defeated him in the semifinal.
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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