[15] Jannik Sinner 6-2,7-5 Federico Delbonis [48] 2021-08-16 17:15
Stadium: Grandstand Round: 24 Ground: Hardcourt outdoor
Home History
| ATP Toronto | 2021/08/11 15:00 | James Duckworth v Jannik Sinner | 6-3,6-4 |
| ATP Washington | 2021/08/08 21:00 | Mackenzie McDonald v Jannik Sinner | 5-7,6-4,5-7 |
| ATP Washington | 2021/08/07 20:00 | Jannik Sinner v Jenson Brooksby | 7-6,6-1 |
| ATP Washington | 2021/08/06 19:25 | Jannik Sinner v Steve Johnson | 6-4,6-2 |
| ATP Washington | 2021/08/05 18:00 | Jannik Sinner v Sebastian Korda | 7-6,7-6 |
| ATP Washington | 2021/08/04 20:30 | Jannik Sinner v Emil Ruusuvuori | 6-2,6-4 |
| ATP Atlanta | 2021/07/29 17:30 | Christopher O'Connell v Jannik Sinner | 7-6,6-4 |
| Wimbledon | 2021/06/28 14:30 | Marton Fucsovics v Jannik Sinner | 5-7,6-3,7-5,6-3 |
Away History
| ATP Kitzbuhel | 2021/07/27 09:00 | Arthur Rinderknech v Federico Delbonis | 6-2,6-4 |
| ATP Gstaad | 2021/07/21 10:50 | Federico Delbonis v Hugo Gaston | 0-6,7-6,6-7 |
| ATP Gstaad | 2021/07/20 13:00 | Federico Delbonis v Leandro Riedi | 6-3,6-3 |
| ATP Hamburg | 2021/07/17 13:30 | Federico Delbonis v Pablo Carreno Busta | 6-7,3-6 |
| ATP Hamburg | 2021/07/16 16:10 | Benoit Paire v Federico Delbonis | 6-4,6-7,4-6 |
| ATP Hamburg | 2021/07/15 15:50 | Federico Delbonis v Albert Ramos-Vinolas | 6-3,7-6 |
| ATP Hamburg | 2021/07/13 10:30 | Federico Delbonis v Zhizhen Zhang | 6-1,5-7,6-4 |
| Wimbledon | 2021/06/28 15:45 | Federico Delbonis v Andrey Rublev | 6-4,4-6,1-6,2-6 |