Stadium: Court 8 Round: 45 Ground: Clay
| ITF M15 Mornington | 2019/03/17 23:00 | Daisuke Sumizawa v Thomas Bosancic | 3-6,4-6 |
| ITF M15 Nishi-Tokyo | 2019/03/12 02:35 | Rimpei Kawakami v Daisuke Sumizawa | 6-2,6-1 |
| ITF M15 Nishi-Tokyo | 2019/03/11 03:30 | Daisuke Sumizawa v Quentin Folliot | 6-2,6-2 |
| ITF M15 Nishi-Tama | 2019/03/06 03:20 | Yuki Mochizuki v Daisuke Sumizawa | 6-1,7-6 |
| ITF M15 Nishi-Tama | 2019/03/05 01:00 | Kazuki Shimizu v Daisuke Sumizawa | 2-6,2-6 |
| ITF M15 Anning | 2019/01/07 01:30 | Daisuke Sumizawa v Ye Cong Mo | 1-6,4-6 |
| ITF M15 Anning | 2018/12/31 05:00 | Daisuke Sumizawa v Yuichiro Inui | 4-6,2-6 |
| ITF M15 Anning | 2018/12/31 01:30 | Daisuke Sumizawa v Baoluo Zheng | 6-2,7-6 |
| ITF Australia F7 | 2018/09/29 03:45 | Zac Osborne v Masayoshi Ono | 4-6,3-6 |
| ITF Australia F7 | 2018/09/29 00:00 | Zac Osborne v John Hu | 7-6,6-1 |
| ITF Australia F6 | 2018/09/24 02:05 | Masayoshi Ono v Zac Osborne | 6-2,6-1 |
| ITF Australia F6 | 2018/09/23 00:30 | Zac Osborne v Patrick Kotan | 4-6,6-3,7-5 |
| ITF Australia F5 | 2018/09/14 23:00 | Zac Osborne v Mason Naumovski | 4-6,6-3,6-7 |
| ITF Australia F4 | 2018/03/27 03:20 | Blake Ellis v Zac Osborne | 6-4,6-4 |
| ITF Australia F4 Qual | 2018/03/26 00:00 | Zac Osborne v Jackson B-Tennant | 6-1,6-0 |
| ITF Australia F4 Qual | 2018/03/25 00:30 | Zac Osborne v Marlino Pascual | 6-3,6-4 |