Stadium: Hard 20 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/06/09 13:00 | Yaron Guberman v Martin Breysach | 3-6,1-6 |
| ITF M15 Heraklion | 2021/06/03 09:30 | Nicolas Alvarez Varona v Martin Breysach | 6-3,6-3 |
| ITF M15 Heraklion | 2021/06/01 08:00 | Aristotelis Thanos v Martin Breysach | 3-6,3-6 |
| ITF M15 Heraklion | 2021/05/26 11:55 | Yshai Oliel v Martin Breysach | 6-2,6-0 |
| ITF M15 Sibenik | 2021/05/19 17:05 | Martin Breysach v Jose Fco. Vidal Azorin | 6-4,3-6,2-6 |
| ITF M15 Sibenik | 2021/05/18 08:00 | Jaimee Floyd Angele v Martin Breysach | 7-5,6-1 |
| ITF M15 Sibenik | 2021/05/17 11:00 | Martin Zeljenka v Martin Breysach | 6-7,3-6 |
| ITF M15 Sibenik | 2021/05/16 10:00 | Rafael Kis Balazs v Martin Breysach | 0-6,4-6 |
| ITF M15 Heraklion | 2021/06/09 08:40 | Giles Hussey v Mateus Alves | 6-4,1-6,7-5 |
| ITF M15 Heraklion | 2021/06/08 06:30 | Giles Hussey v Sahar Simon | 6-3,6-1 |
| ITF M15 Heraklion | 2021/06/07 09:00 | Harry Wendelken v Giles Hussey | 4-6,3-6 |
| ITF M15 Heraklion | 2021/06/06 11:00 | Asaf Friedler v Giles Hussey | 3-6,3-6 |
| ITF M25 Naples | 2019/10/30 14:00 | Manuel Pena Lopez v Giles Hussey | 6-2,6-1 |
| ITF M25 Naples | 2019/10/30 14:00 | Manuel P Lopez v Giles Hussey | 6-2,5-1 |
| ITF M25 Naples | 2019/10/29 14:00 | Adam Walton v Giles Hussey | 6-3,1-6,10-12 |
| ITF M25 Naples | 2019/10/28 14:00 | Giles Hussey v Goncalo Ferreira | 6-1,6-3 |