Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Tbilisi | 2021/05/17 06:00 | Aliaksandr Liaonenka v Emir Sendogan | 6-2,7-5 |
| ITF M15 Tbilisi | 2021/05/17 05:30 | Aliaksandr Liaonenka v Irakli Metreveli | 6-0,6-3 |
| ITF M15 St Petersburg | 2021/04/12 08:35 | Egor Noskin v Aliaksandr Liaonenka | 6-4,6-2 |
| ITF M15 St Petersburg Qual | 2021/04/11 07:00 | Maxim Krapivin v Aliaksandr Liaonenka | 3-6,3-6 |
| ITF M15 St Petersburg | 2021/04/04 13:15 | Dominik Recek v Aliaksandr Liaonenka | 6-4,6-2 |
| ITF M15 Monastir | 2021/03/24 08:30 | Youcef Rihane v Aliaksandr Liaonenka | 6-4,3-6,6-3 |
| ITF M15 Monastir | 2021/03/22 12:30 | Stefano Battaglino v Aliaksandr Liaonenka | 5-7,6-3,7-10 |
| ITF M15 Monastir | 2021/03/22 08:00 | Maikel De Boes v Aliaksandr Liaonenka | 5-7,2-6 |
| ITF M15 Monastir | 2021/05/13 10:30 | Benjamin Lock v Mattia Frinzi | 6-7,4-6 |
| ITF M15 Monastir | 2021/05/11 10:35 | Benjamin Lock v Bruno Nhavene | 6-3,6-2 |
| ITF M15 Monastir | 2021/05/06 10:45 | Gustavo Heide v Benjamin Lock | 6-1,7-5 |
| ITF M15 Monastir | 2021/05/05 08:30 | Yuta Kawahashi v Benjamin Lock | 3-6,6-2,4-6 |
| Challenger Salinas 2 | 2021/04/27 14:30 | Facundo Diaz Acosta v Benjamin Lock | 6-1,6-2 |
| Challenger Salinas 2 | 2021/04/26 14:30 | Jorge Panta v Benjamin Lock | 4-6,6-7 |
| Challenger Salinas | 2021/04/18 18:00 | Mathieu Perchicot v Benjamin Lock | 6-4,0-6,6-4 |
| ITF M15 Monastir | 2021/03/30 10:30 | Evan Zhu v Benjamin Lock | 6-3,6-4 |