Stadium: Court 11 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Caloundra | 2023/08/01 03:40 | Derek Pham v Zachary Viiala | 6-1,6-2 |
| ITF M15 Caloundra | 2023/07/26 00:00 | Zachary Viiala v Thomas Fancutt | 6-7,4-6 |
| ITF M15 Caloundra | 2023/07/24 04:00 | Tomislav E Papac v Zachary Viiala | 6-4,4-6,6-10 |
| ITF M15 Caloundra | 2023/07/22 23:00 | Zachary Adam-Gedge v Zachary Viiala | 3-6,1-6 |
| Challenger Traralgon | 2022/01/02 00:00 | Rubin Statham v Zachary Viiala | 6-1,6-3 |
| UTR Pro Tennis Series Canberra | 2021/12/11 23:30 | Nathan Boniel v Zachary Viiala | 6-4,6-2 |
| UTR Pro Tennis Series Canberra | 2021/12/10 22:00 | Zachary Viiala v David Qariaqus | 6-1,6-0 |
| UTR Pro Tennis Series Canberra | 2021/12/10 00:45 | Zachary Viiala v Tomislav E Papac | 6-2,6-4 |