Stadium: Court 1 Round: 26 Ground: Clay
| ITF M25 Meerbusch | 2021/04/13 13:30 | Tak Khunn Wang v Marvin Moeller | 6-4,6-3 |
| Challenger Split | 2021/04/04 10:30 | Akira Santillan v Tak Khunn Wang | 4-6,6-1,7-6 |
| Challenger Lille | 2021/03/22 10:00 | Matteo Martineau v Tak Khunn Wang | 7-5,7-5 |
| Challenger Lille | 2021/03/21 11:15 | Tak Khunn Wang v Antoine Escoffier | 5-7,6-4,6-4 |
| ITF M25 Vale Do Lobo | 2021/03/13 13:20 | Sebastian Fanselow v Tak Khunn Wang | 6-1,6-3 |
| ITF M25 Vale Do Lobo | 2021/03/12 12:30 | Tak Khunn Wang v Francisco Cabral | 6-2,6-2 |
| ITF M25 Vale Do Lobo | 2021/03/11 10:25 | Antoine Escoffier v Tak Khunn Wang | 6-7,4-6 |
| ITF M25 Vale Do Lobo | 2021/03/10 15:20 | Alexis Boureau v Tak Khunn Wang | 3-6,1-6 |
| ITF M25 Meerbusch | 2021/04/13 16:40 | Peter Heller v Viktor Durasovic | 6-3,6-4 |
| ITF M15 Antalya | 2021/03/20 07:30 | Peter Heller v Matheus Pucinelli De Almeida | 4-6,6-7 |
| ITF M15 Antalya | 2021/03/19 07:30 | Nicholas David Ionel v Peter Heller | 3-6,0-6 |
| ITF M15 Antalya | 2021/03/18 07:00 | Peter Fajta v Peter Heller | 3-6,0-6 |
| ITF M15 Antalya | 2021/03/17 07:30 | Hamad Medjedovic v Peter Heller | 3-6,6-7 |
| ITF M15 Antalya | 2021/03/13 07:30 | Peter Heller v Miljan Zekic | 6-7,6-7 |
| ITF M15 Antalya | 2021/03/11 07:00 | Oleksii Krutykh v Peter Heller | 3-6,0-6 |
| ITF M15 Antalya | 2021/03/09 10:00 | Danylo Veremeychuk v Peter Heller | 0-6,1-5 |