| German Premier League | 2020/07/27 17:05 | Paul Valsecchi v Johann Willems | 1-6,7-5,6-2 |
| ITF M15 Monastir | 2020/03/09 13:30 | Johann Willems v Paras Dahiya | 3-6,6-2,6-10 |
| ITF M15 Monastir | 2020/03/09 08:00 | Johann Willems v Lewie Lane | 6-4,6-4 |
| ITF M15 Monastir | 2020/03/08 08:00 | Adil Kalyanpur v Johann Willems | 2-6,2-6 |
| Challenger Koblenz | 2020/02/17 09:00 | Lucas Gerch v Johann Willems | 6-1,6-7,6-1 |
| ITF M25 Nussloch | 2020/01/20 09:00 | Robin Stanek v Johann Willems | 7-5,6-0 |
| ITF M25 Nussloch | 2020/01/19 09:00 | Flemming Peters v Johann Willems | 2-6,0-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/08 11:00 | Jeremy Schifris v Johann Willems | 3-6,6-3,10-3 |
| ITF M15 Helsinki | 2021/06/02 11:30 | Mikhail Minakov v Yannik Steinegger | 4-6,1-6 |
| ITF M15 Helsinki | 2021/06/01 08:45 | Arvid Nordquist v Mikhail Minakov | 3-6,3-6 |
| ITF M15 Helsinki | 2021/05/31 10:00 | Nuutti Jokinen v Mikhail Minakov | 4-6,1-6 |
| ITF M15 Antalya | 2021/01/17 09:00 | Mikhail Minakov v Nicolae Frunza | 6-7,1-6 |
| ITF M15 Antalya | 2020/12/22 06:30 | Aleksandr Braynin v Mikhail Minakov | 3-6,6-2,10-8 |
| ITF M15 Antalya | 2020/12/21 10:50 | Umut Kaan Yenilmez v Mikhail Minakov | 1-6,1-6 |
| ITF M15 Antalya | 2020/12/15 11:00 | Oleksandr Ovcharenko v Mikhail Minakov | 6-4,6-4 |
| ITF M15 Antalya | 2020/12/02 07:00 | Sebastian Gima v Mikhail Minakov | 6-0,7-5 |