| Singles | |
|---|---|
| 2025 ATP Finals | |
| 2024 Champion |  Jannik Sinner |
| Draw | 8 (round robin + elimination) |
| Seeds | 8 |
Jannik Sinner is the defending champion. [1]
Carlos Alcaraz and Sinner are in contention for the year-end No. 1 singles ranking. If Alcaraz wins all three of his round-robin matches, or two round-robin match wins and a semifinal win, then he will claim the year-end No. 1 ranking irrespective of Sinner's result.
Ben Shelton will make his debut in the singles competition.
Key
| Semifinals | Final | ||||||||||||
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 Alcaraz |  Djokovic |  Fritz |  de Minaur | RR W–L | Set W–L | Game W–L | Standings | ||
| 1 | Carlos Alcaraz | 0–0 ( – ) | 0–0 ( – ) | ||||||
| 4 | Novak Djokovic | 0–0 ( – ) | 0–0 ( – ) | ||||||
| 6 | Taylor Fritz | 0–0 ( – ) | 0–0 ( – ) | ||||||
| 7 | Alex de Minaur | 0–0 ( – ) | 0–0 ( – ) |
| Sinner |  Zverev | Shelton | | RR W–L | Set W–L | Game W–L | Standings | ||
| 2 | Jannik Sinner | 0–0 ( – ) | 0–0 ( – ) | ||||||
| 3 | Alexander Zverev | 0–0 ( – ) | 0–0 ( – ) | ||||||
| 5 | Ben Shelton | 0–0 ( – ) | 0–0 ( – ) | ||||||
| 8 | | 0–0 ( – ) | 0–0 ( – ) |
Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-player ties, head-to-head records; 4. in three-player ties, (a) percentage of sets won (head-to-head records if two players remain tied), then (b) percentage of games won (head-to-head records if two players remain tied), then (c) ATP rankings.
