| UTR Pro Tennis Series Mulheim | 2021/10/16 08:15 | 슈미츠, 콘스탄틴 v Willems, Johann | 3-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/15 11:30 | 반셀보임, 에릭 v Willems, Johann | 2-6,4-6 |
| 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 | 마레로 쿠르벨로, 이반 v Willems, Johann | 2-6,3-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 12:15 | Willems, Johann v 드호, 벤자민 | 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 브로빌, 맥센스 | 0-0 |
| German Premier League | 2020/07/27 17:05 | 발세치, 파울 v Willems, Johann | 1-6,7-5,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/10/16 09:30 | Hansen, Christian v 폰트조디크로모, 시단 | 6-3,3-6,5-2 |
| UTR Pro Tennis Series Mulheim | 2021/10/15 07:00 | Tom Gentzsch v Hansen, Christian | 4-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/14 07:00 | 베르스테겐, 퀸 v Hansen, Christian | 3-6,6-3,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/13 11:30 | 두다, 필리프 v Hansen, Christian | 6-2,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 08:30 | Alen Moritz Hodzic v Hansen, Christian | 6-7,7-6,3-5 |
| ITF M25 Meerbusch | 2021/04/13 11:00 | Hansen, Christian v 워에르너, 파울 | 2-6,3-6 |
| ITF M25 Meerbusch | 2021/04/12 11:30 | Hansen, Christian v Pierre, Hugo | 6-4,6-7,10-6 |
| ITF M25 Meerbusch | 2021/04/12 07:30 | 오베르트, 아드리안 v Hansen, Christian | 6-4,2-6,6-10 |