Stadium: Center Court Round: 45 Ground: Hardcourt indoor
| ITF Japan F8 | 2018/06/09 01:00 | Seita Watanabe v Tomohiro Masabayashi | 7-6,5-7,4-6 |
| Challenger Kobe Qual | 2017/11/04 07:45 | Seita Watanabe v Gao, Xin | 6-4,4-6,0-6 |
| ITF Thailand F8 | 2018/11/08 02:00 | Antoine Bellier v Saito, Takashi | 6-1,6-1 |
| ITF Thailand F8 | 2018/11/07 02:00 | Navasirisomboon, Jirat v Saito, Takashi | 0-6,0-6 |
| ITF Thailand F8 | 2018/11/05 08:55 | Isarow, Pruchya v Saito, Takashi | 3-6,4-6 |
| Thailande F6, Qualifications Simples | 2018/10/11 03:00 | Saito, Takashi v Spec, Matic | 4-6,7-6,6-7 |
| Thailande F6, Qualifications Simples | 2018/10/09 05:00 | Saito, Takashi v Susanto, David Agung | 6-2,6-1 |
| ITF Thailand F5 | 2018/10/04 04:30 | Saito, Takashi v Kelsey Stevenson | 4-6,6-7 |
| ITF Thailand F5 | 2018/10/03 03:40 | Saito, Takashi v Navasirisomboon, Jirat | 7-5,6-1 |
| ITF Thailand F5 | 2018/10/01 04:00 | Saito, Takashi v Congsup Congcar | 7-6,1-6,6-4 |