Stadium: Court 4 Round: 54 Ground: Hardcourt indoor
| ITF M15 St Petersburg | 2021/04/04 10:05 | Daniil Glinka v Stepan Pecak | 7-5,6-1 |
| Challenger St. Petersburg Qual | 2021/03/07 09:35 | Khumoyun Sultanov v Daniil Glinka | 7-6,6-4 |
| Challenger St. Petersburg | 2021/02/28 09:10 | Daniil Glinka v Skander Mansouri | 6-3,6-7,5-7 |
| ITF M15 St Petersburg Qual | 2021/02/07 12:45 | Daniil Glinka v Chad Kissell | 6-2,4-6,8-10 |
| ITF M15 St Petersburg | 2021/02/03 08:20 | Jan Choinski v Daniil Glinka | 6-1,6-4 |
| ITF M15 St Petersburg | 2021/02/01 07:00 | Daniil Glinka v Leonid Sheyngezikht | 6-3,6-4 |
| ITF M15 Parnu | 2020/11/05 08:00 | Daniil Glinka v Mick Veldheer | 6-7,6-7 |
| ITF M15 Parnu | 2020/11/03 08:00 | Daniil Glinka v Siim Troost | 6-3,6-4 |
| 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 |
| ITF M25 Trimbach | 2021/03/09 14:40 | Yannik Steinegger v Alexander Erler | 4-6,4-6 |
| ITF M15 Grenoble | 2021/02/07 14:55 | Yannik Steinegger v Jurgen Briand | 3-6,7-6,8-10 |
| ITF M15 Bratislava | 2020/11/25 15:05 | Savriyan Danilov v Yannik Steinegger | 6-4,3-6,6-2 |
| ITF M15 Sarreguemines | 2020/10/26 13:30 | Yannik Steinegger v Louis Dussin | 4-6,5-7 |
| ITF M15 Sarreguemines | 2020/10/25 15:30 | Ugo Blanchet v Yannik Steinegger | 4-6,6-3,7-10 |
| ITF M15 Forbach | 2020/09/30 08:30 | Alexis Gautier v Yannik Steinegger | 7-5,6-3 |