Stadium: Court 7 Round: 62 Ground: Clay
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Benedikt Emesz v William Ma | 6-1,6-0 |
| UTR Pro Tennis Series Canberra | 2021/04/24 00:00 | Omar Jasika v William Ma | 6-3,5-2 |
| UTR Pro Tennis Series Canberra | 2021/04/21 01:30 | William Ma v Li Tu | 2-6,3-6 |
| UTR Pro Tennis Series Canberra | 2021/04/20 01:30 | William Ma v Arjun Mehrotra | 6-3,4-6,7-6 |
| UTR Pro Tennis Series Canberra | 2021/04/19 01:00 | James McCabe v William Ma | 6-3,6-3 |
| UTR Pro Tennis Series Bendigo | 2021/01/31 03:00 | William Ma v Chanchai Sookton-Eng | 1-6,2-5 |
| UTR Pro Tennis Series Bendigo | 2021/01/30 03:00 | Aaron Addison v William Ma | 6-2,5-1 |
| UTR Pro Tennis Series Bendigo | 2021/01/28 07:00 | William Ma v Aidan Fitzgerald | 5-3 |