Stadium: Court 2 Round: 25 Ground: Clay
| ITF - M15 Antalya | 2021/03/08 09:00 | Michalis Sakellaridis v Ivan Sergeyev | 6-7,2-6 |
| ITF - M15 Antalya | 2021/03/07 07:00 | Ivan Sergeyev v Cetin, Guney Ege | 6-0,6-1 |
| ITF - M15 Sharm El Sheikh | 2020/11/09 10:30 | Koenig, Luc v Ivan Sergeyev | 0-6,2-6 |
| ITF - M15 Sharm El Sheikh | 2020/11/08 12:30 | Ivan Sergeyev v Daisuke Sumizawa | 7-6,1-6,11-9 |
| ITF - M15 Sharm El Sheikh | 2020/11/01 13:00 | Ivan Sergeyev v Borai, Ahmed | 6-0,6-1 |
| ITF M15 Novomoskovsk | 2020/09/04 07:00 | Bogdan Bobrov v Ivan Sergeyev | 5-7,6-2,6-4 |
| ITF M15 Novomoskovsk | 2020/09/03 10:45 | Ivan Sergeyev v Uzhylovsky, Vladimir | 6-4,6-4 |
| ITF M15 Novomoskovsk | 2020/09/02 09:55 | Ivan Sergeyev v Oleg Prihodko | 7-6,6-2 |
| ITF - M15 Antalya | 2021/04/08 06:55 | Flavio Cobolli v Schmitz, Constantin | 7-6,7-6 |
| ITF - M15 Antalya | 2021/04/06 07:00 | Schmitz, Constantin v Bogdan Bobrov | 6-1,6-4 |
| ITF - M15 Antalya | 2021/03/30 08:30 | Pol Martin Tiffon v Schmitz, Constantin | 6-4,7-6 |
| ITF - M15 Antalya | 2021/03/26 07:00 | Georgii Kravchenko v Schmitz, Constantin | 6-2,6-3 |
| ITF - M15 Antalya | 2021/03/24 07:30 | Schmitz, Constantin v Pedro Vives Marcos | 6-3,6-3 |
| ITF - M15 Monastir | 2021/03/10 10:30 | Mertens, Yannick v Schmitz, Constantin | 6-0,6-2 |
| ITF - M15 Monastir | 2021/03/04 08:30 | Mateus Alves v Schmitz, Constantin | 6-3,6-4 |
| ITF - M15 Monastir | 2021/03/02 08:30 | Schmitz, Constantin v Christoph Negritu | 6-4,7-6 |