Stadium: Court 6 Round: 27 Ground: Hardcourt outdoor
| ITF Thailand F3 | 2018/09/06 02:00 | Moritani, Soichiro v Saito, Takashi | 7-5,6-2 |
| ITF Vietnam F2 | 2018/05/07 03:00 | Saito, Takashi v Moritani, Soichiro | 7-6,3-6,6-3 |
| ITF Japan F3 | 2018/03/18 01:00 | Moritani, Soichiro v Saito, Takashi | 6-3,3-6,0-6 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/08 04:30 | Saito, Takashi v Ray Ho | 7-6,6-3 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/07 04:20 | Xia, Zihao v Saito, Takashi | 6-7,3-6 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/06 02:30 | Saito, Takashi v Yeung, Pak Long | 7-6,7-6 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/05 03:00 | Saito, Takashi v Sekhar, S Prithvi | 6-0,6-2 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/07/31 02:30 | Rio Noguchi v Saito, Takashi | 6-2,7-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/07/30 02:30 | Saito, Takashi v Kumthonkittikul, W. | 6-2,6-4 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/07/29 02:30 | Saito, Takashi v Jirapoomdaje, Pawin | 6-2,6-1 |
| ITF M25 Martos | 2019/06/18 14:30 | Echazu, Mauricio v Saito, Takashi | 7-6,4-6,2-6 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/08 03:50 | Moritani, Soichiro v Niki Kaliyanda Poonacha | 7-6,7-6 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/07 05:50 | Moritani, Soichiro v Singh, Karunuday | 7-5,6-2 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/07/30 06:25 | Ryota Tanuma v Moritani, Soichiro | 6-2,2-6,6-3 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/07/25 07:15 | Moritani, Soichiro v Crnokrak, Alexander | 3-6,2-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/07/23 05:45 | Credit Chaiyarin v Moritani, Soichiro | 2-6,3-6 |
| Kunshan, Simples M-ITF-CHN-12A | 2019/07/04 01:30 | Moritani, Soichiro v Fajing Sun | 1-6,0-6 |
| Kunshan, Simples M-ITF-CHN-12A | 2019/07/03 01:30 | Zhou, Sheng Hao v Moritani, Soichiro | 3-6,4-6 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/12 01:00 | Moritani, Soichiro v Inoue, Haru | 0-6,2-6 |