Stadium: Court 1 El Cortijo Round: 44 Ground: Clay
| ITF M25 Reus | 2021/04/11 07:00 | Kenny de Schepper v Rafael Giotis | 6-3,6-4 |
| ITF M15 Antalya | 2021/03/30 07:00 | Vlad Andrei Dancu v Rafael Giotis | 0-6,7-6,10-2 |
| ITF M15 Antalya | 2021/03/29 07:00 | Rafael Giotis v Arsenije Zlatanovic | 6-3,6-1 |
| ITF M15 Antalya | 2021/03/28 06:30 | Rafael Giotis v Carlo Alberto Fossati | 7-5,4-6,10-4 |
| ITF M15 Antalya | 2021/03/21 07:00 | Gabriel Donev v Rafael Giotis | 7-5,6-0 |
| ITF M15 Antalya | 2021/03/14 07:00 | Dan Alexandru Tomescu v Rafael Giotis | 6-0,6-2 |
| ITF M15 Antalya | 2021/02/21 07:00 | Rafael Giotis v Deney Wassermann | 7-6,2-6,11-13 |
| ITF M15 Antalya | 2021/02/16 07:00 | Rafael Giotis v Gabriele Maria Noce | 1-6,4-6 |
| ITF M15 Sibenik | 2021/04/20 12:15 | Martin Breysach v David Pichler | 2-6,1-6 |
| Challenger Lille | 2021/03/21 15:15 | Martin Breysach v Filip Cristian Jianu | 3-6,3-6 |
| ITF M15 Poitiers | 2021/03/19 11:00 | Martin Breysach v Lucas Poullain | 0-6,3-6 |
| ITF M15 Poitiers | 2021/03/18 09:30 | Martin Breysach v Max Wiskandt | 6-2,6-7,6-4 |
| ITF M15 Poitiers | 2021/03/17 09:00 | Mick Veldheer v Martin Breysach | 1-6,6-4,6-7 |
| ITF M15 Bratislava | 2021/03/10 15:15 | Danylo Kalenichenko v Martin Breysach | 7-5,4-6,7-5 |
| ITF M25 Vale Do Lobo | 2021/02/21 11:30 | Lukas H Lilleengen v Martin Breysach | 3-6,6-2,11-9 |
| ITF M15 Grenoble | 2021/02/10 12:15 | Martin Breysach v Lucas Poullain | 2-6,2-6 |