Stadium: Court 1 Round: 62 Ground: Clay
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Petros Tsitsipas v Stephanos Schinas | 6-3,6-2 |
| ITF M25 Ajaccio | 2021/07/11 16:00 | Petros Tsitsipas v Clement Chidekh | 3-6,0-6 |
| ITF M25 Ajaccio | 2021/07/10 19:20 | Petros Tsitsipas v Loris Pourroy | 6-4,6-7,6-3 |
| ITF M25 Ajaccio | 2021/07/09 16:35 | Petros Tsitsipas v Lisandru Rodriguez | 7-6,6-1 |
| ITF M25 Ajaccio | 2021/07/08 12:30 | Hiroki Moriya v Petros Tsitsipas | 1-6,6-3,2-6 |
| ITF M25 Ajaccio | 2021/07/07 19:05 | Petros Tsitsipas v Hendrik Jebens | 3-6,6-0,6-1 |
| ITF M15 Monastir | 2021/06/24 11:30 | Omni Kumar v Petros Tsitsipas | 6-1,6-2 |
| ITF M15 Monastir | 2021/06/23 13:00 | Petros Tsitsipas v Jabari Stafford | 6-2,6-3 |
| ITF M15 Monastir | 2021/02/28 08:00 | Raffael Schaer v Vladislav Melnic | 6-7,2-6 |
| ITF M15 Monastir | 2021/02/21 11:00 | Bruno P Navarro v Raffael Schaer | 6-1,6-0 |
| ITF M15 Monastir | 2021/02/15 10:00 | Raffael Schaer v Taiyo Yamanaka | 4-6,4-6 |
| ITF M15 Monastir | 2021/02/14 10:00 | Louis Herman v Raffael Schaer | 4-6,5-7 |
| ITF M15 Monastir | 2021/02/07 12:30 | Kenneth Raisma v Raffael Schaer | 1-6,7-6,10-5 |
| ITF M15 Monastir | 2021/02/07 08:00 | Luca Teboul v Raffael Schaer | 3-6,1-6 |