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 Ulcinj | 2021/09/15 13:15 | Daisuke Sumizawa v Juan Pablo Paz | 4-6,2-6 |
| ITF M15 Ulcinj | 2021/09/13 13:00 | Daisuke Sumizawa v Deney Wassermann | 6-4,7-6 |
| ITF M15 Ulcinj | 2021/09/13 08:00 | Daisuke Sumizawa v Nicolo Inserra | 6-4,6-0 |
| ITF M15 Ulcinj | 2021/09/09 12:15 | Daisuke Sumizawa v Bastian Malla | 6-4,1-6,0-6 |
| ITF M15 Ulcinj | 2021/09/06 13:00 | Daisuke Sumizawa v Alessandro Procopio | 6-2,6-2 |
| ITF M15 Ulcinj | 2021/09/06 07:30 | Daisuke Sumizawa v Eric Morris | 7-6,6-1 |
| ITF M15 Cairo | 2021/08/04 12:45 | Daisuke Sumizawa v Ignacio Monzon | 3-6,1-6 |
| ITF M15 Cairo | 2021/07/28 09:40 | Luca Tomasetto v Daisuke Sumizawa | 4-6,6-1,6-1 |
| ITF M15 Monastir | 2021/09/19 14:30 | Kousuke Ogura v Mohamed Amin Oueslati | 6-1,6-2 |
| ITF M15 Monastir | 2021/09/15 14:00 | Kousuke Ogura v Axel Garcian | 4-6,1-6 |
| ITF M15 Monastir | 2021/07/20 11:25 | Kousuke Ogura v Sascha Gueymard Wayenburg | 2-6,1-6 |
| ITF M15 Monastir | 2021/07/15 10:15 | Kousuke Ogura v Moez Echargui | 1-6,1-6 |
| ITF M15 Monastir | 2021/07/14 10:45 | Alexandr Binda v Kousuke Ogura | 2-6,6-7 |
| ITF M15 Monastir | 2021/07/12 14:30 | Kousuke Ogura v Connor Di Marco | 4-6,6-4,10-6 |
| ITF M15 Monastir | 2021/07/11 10:00 | Kousuke Ogura v Imran Sibille | 6-2,7-6 |
| ITF M15 Monastir | 2021/07/05 09:00 | Kousuke Ogura v Mark Mandlik | 6-7,1-6 |