Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Sharm El Sheikh | 2020/03/03 08:00 | Issei Okamura v Uzhylovsky, Vladimir | 7-6,4-6,6-10 |
| ITF - M15 Sharm El Sheikh | 2020/02/26 08:00 | Issei Okamura v Tanuma, Ryota | 3-6,2-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/25 08:00 | Issei Okamura v Nguyen, Phuong van | 6-3,4-6,10-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/24 09:00 | Issei Okamura v Mzai, Ismael Changawa Ruwa | 6-3,3-6,10-5 |
| ITF - M15 Sharm El Sheikh | 2020/02/20 09:40 | Issei Okamura v Jacopo Berrettini | 1-6,2-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/19 15:40 | Issei Okamura v Piotr Grynkowski | 6-3,7-5 |
| Nonthaburi, Singles M-ITF-THA-01A | 2020/01/26 07:50 | Issei Okamura v Kovapitukted, Palaphoom | 4-6,1-6 |
| Hong Kong, Simples M-ITF-HKG-01A | 2020/01/08 06:50 | El Midhawy, Adam v Issei Okamura | 4-6,6-2,6-3 |
| Trnava, Singles Main, M-ITF-SVK-03A | 2020/02/24 08:30 | Fekiac, Martin v Noah Thurner | 6-2,6-1 |
| ITF - M15 Oberhaching | 2020/02/16 08:00 | Aichhorn, Jakob v Noah Thurner | 7-5,6-3 |
| ITF - M15 Grenoble | 2020/02/09 16:55 | Noah Thurner v Louis Dussin | 3-6,1-6 |
| ITF - M15 Veigy-Foncenex | 2020/01/26 11:50 | Magnaudet, Lucas v Noah Thurner | 6-3,5-7,10-6 |
| ITF - M25 Nussloch | 2020/01/20 09:00 | Noah Thurner v Marvin Moeller | 0-6,0-6 |
| ITF - M25 Nussloch | 2020/01/19 09:00 | Noah Thurner v Melzer, Lennart | 6-2,6-4 |
| ITF - M15 Monastir | 2019/12/01 10:00 | Dermiens, Guillaume v Noah Thurner | 6-3,6-0 |
| ITF - M15 Monastir | 2019/11/24 10:00 | Noah Thurner v Braham, Mohamed Anouar | 6-4,6-7,7-10 |