| UTR Pro Tennis Series Mulheim | 2021/10/13 10:00 | 웡, 징룽 v Sandkaulen, Tim | 3-6,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 08:30 | 웡, 징룽 v 자바키안, 유리 | 5-7,6-1,6-3 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 07:00 | Ambarzumjan, Edison v 웡, 징룽 | 1-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/25 10:00 | 싱클라이어, 콜린 v 웡, 징룽 | 6-1,6-4 |
| UTR Pro Tennis Series Mulheim | 2021/09/24 13:30 | 웡, 징룽 v Bielinskyi, Oleksandr | 1-6,6-3,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/22 11:00 | 웡, 징룽 v 데 쿠이퍼, 줄리엔 | 6-1,5-4 |
| UTR Pro Tennis Series Mulheim | 2021/09/20 11:00 | 카레테로, 파블로 v 웡, 징룽 | 2-6,6-3,6-6 |
| ITF M25 Eupen | 2021/09/06 09:15 | Jip Van Assendelft v 웡, 징룽 | 6-4,6-1 |
| UTR Pro Tennis Series Mulheim | 2021/10/14 10:00 | 자바키안, 유리 v 슈미츠, 콘스탄틴 | 4-6,5-7 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 08:30 | Ambarzumjan, Edison v 슈미츠, 콘스탄틴 | 2-6,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 07:00 | 슈미츠, 콘스탄틴 v Sandkaulen, Tim | 6-4,7-5 |
| ITF M15 Allershausen | 2021/08/31 11:25 | 슈미츠, 콘스탄틴 v 벨드힐, 마이크 | 6-7,4-6 |
| ITF M25 Trier | 2021/08/26 09:30 | 슈미츠, 콘스탄틴 v 니부어, 리얀 | 4-6,2-6 |
| ITF M25 Trier | 2021/08/25 11:40 | 로센크란즈, 매츠 v 슈미츠, 콘스탄틴 | 1-6,1-6 |
| ITF M15 Oldenzaal | 2021/08/19 12:35 | 슈미츠, 콘스탄틴 v 존슨, 루크 | 7-5,0-6,3-6 |
| ITF M15 Oldenzaal | 2021/08/18 14:10 | 슈미츠, 콘스탄틴 v 에신가, 자차리 | 6-3,7-6 |