[107] Mackenzie McDonald 5-7,6-4,5-7 Jannik Sinner [24] 2021-08-08 21:00
Stadion: Stadium Round: 29 Ground: Hardcourt outdoor
Home History
| ATP - Washington | 2021/08/07 22:00 | Kei Nishikori v Mackenzie McDonald | 4-6,6-3,5-7 |
| ATP - Washington | 2021/08/07 01:15 | Mackenzie McDonald v Denis Kudla | 6-3,6-2 |
| ATP - Washington | 2021/08/05 23:05 | Ilya Ivashka v Mackenzie McDonald | 4-6,4-6 |
| ATP - Washington | 2021/08/04 22:10 | Mackenzie McDonald v Benoit Paire | 6-7,6-4,6-4 |
| ATP - Washington | 2021/08/03 23:00 | Mackenzie McDonald v Nick Kyrgios | 6-4,6-4 |
| ATP - Atlanta | 2021/07/27 16:30 | Mackenzie McDonald v Emil Ruusuvuori | 6-7,5-7 |
| ATP - Los Cabos | 2021/07/21 00:00 | Ernesto Escobedo v Mackenzie McDonald | 6-3,6-4 |
| Wimbledon | 2021/06/28 15:50 | Mackenzie McDonald v Karen Khachanov | 6-3,3-6,4-6,6-7 |
Away History
| 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 |
| ATP - Queens | 2021/06/14 11:00 | Jack Draper v Jannik Sinner | 7-6,7-6 |
| French Open | 2021/06/07 15:25 | Rafael Nadal v Jannik Sinner | 7-5,6-3,6-0 |