Stadium: Court 13 Round: 25 Ground: Grass
| ITF M15 Nonthaburi | 2019/11/26 02:30 | Blake Ellis v Daisuke Sumizawa | 6-3,4-6,10-8 |
| ITF M15 Nonthaburi | 2019/11/25 03:50 | Natthasith Kunsuwan v Daisuke Sumizawa | 7-6,6-7,9-11 |
| ITF M15 Nonthaburi | 2019/11/24 09:00 | Noppadol Noikor v Daisuke Sumizawa | 2-6,5-7 |
| Challenger Pune | 2019/11/11 12:30 | Dhruv Sunish v Daisuke Sumizawa | 7-6,6-2 |
| ITF M15 Meshref | 2019/11/06 09:40 | Daisuke Sumizawa v Alec Adamson | 2-6,2-6 |
| ITF M25 Tay Ninh | 2019/10/11 03:00 | Daisuke Sumizawa v Billy Harris | 2-6,4-6 |
| ITF M25 Tay Ninh | 2019/10/09 02:00 | Daisuke Sumizawa v Krittin Koaykul | 6-3,6-2 |
| ITF M25 Tay Ninh | 2019/10/08 02:00 | Daisuke Sumizawa v Qun Gao | 6-2,7-6 |
| ITF M15 Te Anau | 2020/01/04 22:30 | Andrea Vavassori v Luke Saville | 3-6,1-6 |
| ITF M15 Te Anau | 2020/01/04 00:30 | Luke Saville v Shuichi Sekiguchi | 6-3,6-3 |
| ITF M15 Te Anau | 2020/01/02 21:00 | Jesse Delaney v Luke Saville | 2-6,3-6 |
| ITF M15 Te Anau | 2020/01/01 22:00 | Alexander Klintcharov v Luke Saville | 2-6,4-6 |
| ITF M15 Te Anau | 2019/12/30 22:30 | Alexey Shtengelov v Luke Saville | 4-6,0-6 |
| Australian Open WC | 2019/12/11 02:10 | Alex Bolt v Luke Saville | 6-4,2-6,6-3,6-4 |
| Australian Open WC | 2019/12/08 23:00 | Thomas Fancutt v Luke Saville | 3-6,3-6,7-6,6-4,3-6 |
| Challenger Kobe | 2019/11/07 02:00 | Tim Van Rijthoven v Luke Saville | 7-6,7-6 |