[20] Gaël Monfils 6-7,2-6,6-4,6-4,4-6 Jannik Sinner [16] 2021-09-04 18:00
Stadium: Louis Armstrong Stadium Round: 25 Ground: Hardcourt outdoor
Head to Head
| ATP - Wien | 2019/10/24 18:35 | Jannik Sinner v Gaël Monfils | 3-6,6-7 |
| ATP - Antwerp | 2019/10/17 14:30 | Gaël Monfils v Jannik Sinner | 3-6,2-6 |