Stadium: Indoor 2 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Sibenik | 2021/05/19 16:55 | Yan Sabanin v Oscar Moraing | 5-7,2-6 |
| ITF M15 Sibenik | 2021/05/18 09:10 | Yan Sabanin v Yann Marti | 2-6,2-6 |
| ITF M15 Sibenik | 2021/05/17 13:15 | Yan Sabanin v Geronimo Marcolini | 6-1,7-6 |
| ITF M15 Troisdorf | 2021/05/10 09:30 | Marlon Vankan v Yan Sabanin | 3-6,7-6,10-5 |
| ITF M15 Shymkent | 2021/04/14 08:05 | Jose Fco. Vidal Azorin v Yan Sabanin | 6-2,6-2 |
| ITF M15 Shymkent | 2021/04/07 03:45 | Yan Sabanin v Antonio Campo | 1-6,0-6 |
| ITF M15 Kazan | 2021/03/10 16:10 | Yan Sabanin v Bogdan Bobrov | 4-6,5-7 |
| ITF M15 Antalya | 2021/01/29 07:00 | Yan Sabanin v Ilya Snitari | 3-6,2-6 |
| ITF M15 Kouvola | 2021/05/25 07:00 | Yannik Steinegger v Tommy Hellstrom | 6-1,6-0 |
| ITF M15 Troisdorf | 2021/05/11 08:00 | Tom Kocevar-Desman v Yannik Steinegger | 6-3,6-1 |
| ITF M15 Troisdorf | 2021/05/10 11:00 | Leopold Zima v Yannik Steinegger | 2-6,6-7 |
| ITF M15 Troisdorf | 2021/05/09 13:00 | Yannik Steinegger v Milan Welte | 6-4,6-2 |
| ITF M15 St Petersburg Qual | 2021/04/11 14:25 | Daniel Ibragimov v Yannik Steinegger | 4-6,6-4,10-7 |
| ITF M15 St Petersburg | 2021/04/05 11:00 | Daniil Glinka v Yannik Steinegger | 6-2,6-2 |
| ITF M15 St Petersburg | 2021/04/04 10:40 | Yannik Steinegger v Egor Noskin | 6-1,6-4 |
| ITF M25 Biel | 2021/03/29 12:30 | Otto Virtanen v Yannik Steinegger | 6-0,6-4 |