Stadium: Court 6 Round: 54 Ground: Hardcourt outdoor
| Hong Kong, Simples M-ITF-HKG-01A | 2020/01/06 02:00 | Issei Okamura v Geiwald, Douglas | 6-2,6-1 |
| ITF M15 Cancun | 2019/11/15 19:35 | Issei Okamura v Mariano Kestelboim | 4-6,1-6 |
| ITF M15 Cancun | 2019/11/05 16:35 | Mateus Alves v Issei Okamura | 6-3,6-2 |
| ITF M15 Changwon | 2019/10/15 03:10 | Kim, Cheong-Eui v Issei Okamura | 6-4,4-6,6-4 |
| Toowoomba, Simples M-ITF-AUS-08A | 2019/10/08 01:50 | Issei Okamura v Tristan Schoolkate | 3-6,6-2,4-6 |
| Brisbane, Simples M-ITF-AUS-07A | 2019/10/01 03:40 | Issei Okamura v Tomas Barrios Vera | 4-6,4-6 |
| ITF M25 Darwin | 2019/09/25 00:30 | Yu Hsiou Hsu v Issei Okamura | 6-0,7-5 |
| Hua Hin, Singles M-ITF-THA-07A | 2019/09/04 07:20 | Issei Okamura v Mousley, Bradley | 4-6,5-7 |
| Nonthaburi, Qualifications Simples M-ITF-THA-06A | 2019/12/01 09:30 | Jeamoon Lee v Kaewsuto, Chayanon | 6-1,6-1 |
| Nonthaburi, Simples M-ITF-THA-06A | 2019/11/25 02:30 | Kaewsuto, Chayanon v Rishab Agarwal | 1-6,0-6 |
| Nonthaburi, Simples M-ITF-THA-06A | 2019/11/24 03:55 | Kaewsuto, Chayanon v Borisutpong, Pattanapong | 2-6,7-5,10-3 |
| Hua Hin, Singles M-ITF-THA-07A | 2019/09/02 05:20 | Saito, Takashi v Kaewsuto, Chayanon | 6-3,6-2 |
| Hua Hin, Singles M-ITF-THA-07A | 2019/08/21 08:25 | Sookton-Eng, Chanchai v Kaewsuto, Chayanon | 6-0,6-4 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/07/31 02:30 | Anand, Kunal v Kaewsuto, Chayanon | 6-2,6-7,6-2 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/07/22 05:50 | Vuradin, Lucas v Kaewsuto, Chayanon | 6-2,6-2 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/30 10:10 | Kaewsuto, Chayanon v Sekiguchi, Shuichi | 2-6,7-5,4-6 |