Stadium: Court 20 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Torello | 2021/11/02 09:00 | Nikolay Nedelchev v Noah Lopez | 6-1,5-7,6-10 |
| ITF M15 Sozopol | 2021/10/14 18:40 | Nikolay Nedelchev v Hazem Naw | 6-1,1-6,4-10 |
| ITF M15 Sozopol | 2021/10/14 12:30 | Tim Handel v Nikolay Nedelchev | 3-6,6-7 |
| ITF M15 Sozopol | 2021/10/13 09:00 | Yannik Steinegger v Nikolay Nedelchev | 6-4,4-6,5-10 |
| ITF M15 Sozopol | 2021/10/11 10:00 | Nikolay Nedelchev v Michael Gloeckler | 6-0,6-3 |
| ITF M15 Sozopol | 2021/10/06 07:00 | Tim Handel v Nikolay Nedelchev | 6-4,6-4 |
| ITF M15 Sozopol | 2021/10/05 06:30 | Nikolay Nedelchev v Michael Gloeckler | 6-0,6-3 |
| ITF M15 Sozopol | 2021/10/04 07:00 | Nikolay Nedelchev v Martin Iliev | 4-6,6-0,10-4 |
| ITF M15 Heraklion | 2021/11/14 07:00 | Christian Fellin v Veljko Krstic | 7-6,1-6,10-8 |
| ITF M15 Heraklion | 2021/11/07 07:00 | Christian Fellin v Igor Shrolik | 3-6,0-6 |
| ITF M15 Heraklion | 2021/11/02 07:00 | Ioannis Stamoulos v Christian Fellin | 3-6,6-4,10-8 |
| ITF M15 Heraklion | 2021/11/01 11:00 | Drew Van Orderlain v Christian Fellin | 6-3,2-6,6-10 |
| ITF M15 Selva Gardena | 2021/10/25 08:50 | Alessandro Pecci v Christian Fellin | 6-3,7-5 |
| ITF M15 Selva Gardena | 2021/10/24 12:55 | Luca Teboul v Christian Fellin | 4-6,4-6 |
| ITF M15 Bad Waltersdorf | 2021/08/31 07:00 | Matic Dimic v Christian Fellin | 6-1,6-1 |
| ITF M15 Bad Waltersdorf | 2021/08/30 09:00 | Christian Fellin v Simone Cacciapuoti | 6-2,6-4 |