| UTR Pro Tennis Series Mulheim | 2021/10/13 08:30 | Eric Vanshelboim v Dhoe, Benjamin | 6-3,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 07:00 | Eric Vanshelboim v Lawrence Bataljin | 6-1,5-3 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 10:00 | Ivan Marrero Curbelo v Eric Vanshelboim | 1-6,0-6 |
| ITF M25 Skopje | 2021/09/29 07:30 | Henri Squire v Eric Vanshelboim | 6-2,6-3 |
| ITF M25 Pardubice | 2021/09/25 11:10 | Eric Vanshelboim v Filip Misolic | 4-6,4-6 |
| ITF M25 Pardubice | 2021/09/24 07:55 | Stanek, Robin v Eric Vanshelboim | 7-6,5-7,3-6 |
| ITF M25 Pardubice | 2021/09/23 12:30 | Daniel Siniakov v Eric Vanshelboim | 6-4,1-6,2-6 |
| ITF M25 Pardubice | 2021/09/22 10:15 | Lukas Pokorny v Eric Vanshelboim | 7-6,2-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/14 08:30 | Balderas, Diego v Willems, Johann | 0-6,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 07:00 | Ivan Marrero Curbelo v Willems, Johann | 2-6,3-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 12:15 | Willems, Johann v Dhoe, Benjamin | 6-2,5-1 |
| UTR Pro Tennis Series Mulheim | 2021/09/23 09:30 | Willems, Johann v Alen Moritz Hodzic | 0-0 |
| UTR Pro Tennis Series Mulheim | 2021/09/20 08:00 | Willems, Johann v Broville, Maxence | 0-0 |
| German Premier League | 2020/07/27 17:05 | Paul Valsecchi v Willems, Johann | 1-6,7-5,6-2 |
| ITF - M15 Monastir | 2020/03/09 13:30 | Willems, Johann v Dahiya, Paras | 3-6,6-2,6-10 |
| ITF - M15 Monastir | 2020/03/09 08:00 | Willems, Johann v Lewie Lane | 6-4,6-4 |