Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF Thailand F6 | 2018/10/06 05:30 | Daisuke Sumizawa v Kousuke Ogura | 6-3,6-2 |
| ITF M15 Antalya | 2021/06/03 07:30 | Pietro Rondoni v Daisuke Sumizawa | 6-3,6-2 |
| ITF M15 Antalya | 2021/06/02 09:20 | Daisuke Sumizawa v Santiago De La Fuente | 5-7,7-5,7-5 |
| ITF M15 Antalya | 2021/06/01 07:00 | Daisuke Sumizawa v Nicolas Parizzia | 4-6,6-1,6-10 |
| ITF M15 Antalya | 2021/05/31 07:30 | Daisuke Sumizawa v Bora Sengul | 6-1,7-6 |
| ITF M15 Antalya | 2021/05/23 07:30 | Daisuke Sumizawa v Miguel Fernando Pereira | 4-6,1-6 |
| ITF M15 Antalya | 2021/05/18 07:00 | Mariano Navone v Daisuke Sumizawa | 6-3,6-1 |
| ITF M15 Antalya | 2021/05/17 07:00 | Dmitrii Vasilev v Daisuke Sumizawa | 6-7,4-6 |
| ITF M15 Antalya | 2021/05/16 07:00 | Sebastian Bahamondes v Daisuke Sumizawa | 1-6,1-6 |
| ITF M15 Monastir | 2021/06/20 10:30 | Kousuke Ogura v Mauro De Maio | 6-7,5-7 |
| ITF M15 Cairo | 2021/04/11 07:00 | Lawrence Bataljin v Kousuke Ogura | 6-1,5-7,20-18 |
| ITF M15 Sharm El Sheikh | 2021/04/05 07:30 | Kousuke Ogura v Daniel Cox | 2-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/30 10:05 | Pawel Juszczak v Kousuke Ogura | 6-4,7-5 |
| ITF M15 Sharm El Sheikh | 2021/03/29 07:30 | Daniel Cox v Kousuke Ogura | 4-6,6-1,9-11 |
| ITF M15 Sharm El Sheikh | 2021/03/28 07:00 | Roberto Rosales v Kousuke Ogura | 0-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/03/22 07:30 | Marcello Serafini v Kousuke Ogura | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2021/03/21 13:00 | Dominik Langmajer v Kousuke Ogura | 3-6,2-6 |