Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| Nonthaburi, Singles M-ITF-THA-01A | 2020/02/05 02:25 | Lo, Chien Hsun v Jumpei Yamasaki | 7-6,7-5 |
| ITF - M15 Sharm El Sheikh | 2021/02/07 13:00 | Jumpei Yamasaki v Rishi Reddy | 6-4,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/02/01 12:30 | Jumpei Yamasaki v Daisuke Sumizawa | 6-4,1-6,8-10 |
| ITF - M15 Sharm El Sheikh | 2021/01/31 17:30 | Jumpei Yamasaki v Bertuccioli, Federico | 6-3,6-2 |
| ITF M15 Cairo | 2021/01/28 10:00 | Kawakami, Rimpei v Jumpei Yamasaki | 4-6,7-6,7-5 |
| ITF M15 Cairo | 2021/01/27 11:55 | Makhlouf, Sherif v Jumpei Yamasaki | 1-6,2-6 |
| ITF M15 Cairo | 2021/01/20 11:15 | Jumpei Yamasaki v Dzhavakian, Yurii | 4-6,1-6 |
| Challenger Calgary | 2020/02/25 01:30 | Filip Peliwo v Jumpei Yamasaki | 6-1,7-5 |
| Nonthaburi, Singles M-ITF-THA-01A | 2020/02/05 02:25 | Lo, Chien Hsun v Jumpei Yamasaki | 7-6,7-5 |
| ITF - M15 Sharm El Sheikh | 2021/02/07 13:00 | Lo, Chien Hsun v Jiri Barnat | 6-3,6-2 |
| ITF - M15 Sharm El Sheikh | 2020/03/11 10:00 | Jaroslav Pospisil v Lo, Chien Hsun | 2-6,4-6 |
| ITF - M15 Sharm El Sheikh | 2020/03/07 08:00 | Lo, Chien Hsun v Luca Nardi | 7-5,3-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2020/03/06 08:00 | Lo, Chien Hsun v Giorgio Ricca | 7-6,6-3 |
| ITF - M15 Sharm El Sheikh | 2020/03/05 08:00 | Manafov, Vladyslav v Lo, Chien Hsun | 2-6,2-6 |
| ITF - M15 Sharm El Sheikh | 2020/03/04 09:40 | Lo, Chien Hsun v Kunz, Giordan | 6-4,6-3 |
| ITF - M15 Sharm El Sheikh | 2020/02/26 12:35 | Yitbarek, Simon v Lo, Chien Hsun | 6-4,6-4 |
| Nonthaburi, Singles M-ITF-THA-01A | 2020/02/06 02:30 | Lo, Chien Hsun v Laurent Lokoli | 2-6,1-6 |