stadio: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Canberra | 2022/03/29 00:50 | Jason Kubler v Daisuke Sumizawa | 6-4,7-6 |
| ITF M25 Canberra | 2022/03/22 03:05 | James McCabe v Daisuke Sumizawa | 7-5,7-6 |
| ITF M15 Bengaluru | 2022/03/17 08:50 | Daisuke Sumizawa v Manish Sureshkumar | 3-6,6-7 |
| ITF M15 Bengaluru | 2022/03/16 04:00 | Nicolas Tepmahc v Daisuke Sumizawa | 1-6,5-7 |
| ITF M15 Bengaluru | 2022/03/14 05:35 | Daisuke Sumizawa v Tushar Madan | 6-3,6-2 |
| ITF M15 Bhopal | 2022/03/08 07:10 | Daisuke Sumizawa v Sidharth Rawat | 4-6,7-6,1-6 |
| ITF M15 Monastir | 2021/09/30 08:00 | Daisuke Sumizawa v Kousuke Ogura | 2-6,6-3,2-6 |
| ITF M15 Monastir | 2021/09/29 10:40 | Wojciech Marek v Daisuke Sumizawa | 3-6,4-6 |
| ITF M25 Calabasas | 2022/03/25 18:55 | JC Aragone v Ji Sung Nam | 6-3,6-3 |
| ITF M25 Calabasas | 2022/03/24 17:00 | Ji Sung Nam v Osgar O'Hoisin | 6-1,6-7,6-4 |
| ITF M25 Calabasas | 2022/03/23 18:10 | Ji Sung Nam v Jack Pinnington Jones | 7-5,6-4 |
| ITF M25 Bakersfield | 2022/03/15 20:55 | Ji Sung Nam v Gage Brymer | 4-6,3-6 |
| Coppa Davis | 2022/03/04 02:00 | Ji Sung Nam v Dennis Novak | 1-6,4-6 |
| ITF M15 Antalya | 2022/02/08 07:00 | Mircea-Alexandru Jecan v Ji Sung Nam | 7-6,6-2 |
| ITF M15 Antalya | 2022/02/04 09:00 | Evgeny Tyurnev v Ji Sung Nam | 6-1,6-2 |
| ITF M15 Antalya | 2022/01/21 10:55 | Ji Sung Nam v Davide Galoppini | 6-7,3-6 |