Stadium: Court 4 Round: 27 Ground: Clay
| ITF M15 Helsinki | 2021/05/31 07:00 | Lukas Krainer v Adrien Burdet | 5-7,3-6 |
| ITF M15 Kouvola | 2021/05/26 06:00 | Alessandro Bega v Lukas Krainer | 6-1,6-2 |
| ITF M15 Cairo | 2021/04/28 14:55 | Jack Pinnington Jones v Lukas Krainer | 7-6,2-6,6-3 |
| ITF M15 Cairo | 2021/04/20 08:00 | Lukas Krainer v Gian Marco Ortenzi | 4-6,6-7 |
| ITF M15 Cairo | 2021/04/19 08:00 | Lukas Krainer v Lorenzo Claverie | 6-2,6-7,11-9 |
| ITF M15 Cairo | 2021/04/18 07:00 | Lukas Krainer v Stephanos Schinas | 6-1,6-1 |
| ITF M15 Cairo | 2021/04/16 08:30 | Lukas Krainer v Giacomo Dambrosi | 6-4,4-6,3-6 |
| ITF M15 Cairo | 2021/04/15 13:20 | Lukas Krainer v Matteo Donati | 6-2,4-6,6-4 |
| ITF M15 Helsinki | 2021/06/02 10:00 | Quentin Folliot v Francesco Passaro | 2-6,5-7 |
| ITF M15 Bucharest | 2021/05/26 12:15 | Nicholas David Ionel v Quentin Folliot | 7-5,6-0 |
| ITF M15 Bucharest | 2021/05/25 12:30 | Quentin Folliot v Petru-Alexandru Luncanu | 6-3,6-1 |
| ITF M15 Bucharest | 2021/05/24 09:30 | Quentin Folliot v Mihai Razvan Marinescu | 6-4,7-5 |
| ITF M15 Bucharest | 2021/05/23 14:00 | Quentin Folliot v Mihnea L.S. Turcu | 6-2,6-0 |
| ITF M15 Sibenik | 2021/05/19 08:30 | Quentin Folliot v Simone Roncalli | 6-7,0-6 |
| ITF M15 Poitiers | 2021/03/16 09:30 | Benjamin Pietri v Quentin Folliot | 7-6,6-2 |
| ITF M25 Trimbach | 2021/03/11 10:00 | Quentin Folliot v Alexander Erler | 4-6,3-6 |