Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Mornington | 2019/03/18 23:00 | William Ma v Matyas Fuele | 3-6,2-6 |
| ITF M15 Mornington | 2019/03/17 23:00 | Yuichiro Inui v William Ma | 6-7,4-6 |
| ITF M25 Mildura | 2019/03/04 23:00 | William Ma v Ren Nakamura | 4-6,2-6 |
| ITF M25 Mildura | 2019/03/04 01:30 | Jayden Court v William Ma | 6-7,3-6 |
| ITF M25 Hong Kong | 2019/01/01 02:00 | Takashi Saito v William Ma | 6-0,6-3 |
| Challenger Traralgon | 2018/10/21 03:40 | William Ma v Brydan Klein | 4-6,3-6 |
| Challenger Traralgon | 2018/10/20 23:00 | Jack Clements v William Ma | 5-7,3-6 |
| ITF Australia F8 | 2018/10/08 02:30 | Socrates Leon Tsoronis v William Ma | 6-3,6-2 |
| ITF M15 Cancun | 2019/04/16 14:00 | Joao Victor Ortega v Evan Zhu | 0-6,0-6 |
| ITF M15 Cancun | 2019/03/11 15:30 | Joao Victor Ortega v Baker Newman | 0-6,0-6 |
| ITF Mexico F8 | 2017/12/02 17:00 | Joao Victor Ortega v Nicholas Reyes | 0-6,0-6 |
| ITF Mexico F7 | 2017/11/25 16:00 | Joao Victor Ortega v Alan Sau Franco | 1-6,2-6 |