Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Kaohsiung | 2018/09/15 07:45 | Takashi Saito v Yan Bai | 3-6,3-6 |
| ITF Thailand F3 | 2018/09/06 02:00 | Soichiro Moritani v Takashi Saito | 7-5,6-2 |
| ITF Thailand F3 | 2018/09/05 04:00 | Yuichi Ito v Takashi Saito | 2-6,6-4,3-6 |
| ITF Thailand F3 | 2018/09/04 06:55 | Palaphoom Kovapitukted v Takashi Saito | 6-4,4-6,2-6 |
| ITF Thailand F2 | 2018/08/29 04:00 | Takashi Saito v Connor Farren | 6-2,6-1 |
| ITF Thailand F2 | 2018/08/28 07:10 | Takashi Saito v Pol Wattanakul | 6-3,3-6,6-3 |
| Challenger Meerbusch Qual | 2018/08/12 14:25 | Takashi Saito v Alexandre Muller | 3-6,0-6 |
| ITF Belgium F7 | 2018/08/09 09:20 | Takashi Saito v Benjamin Pietri | 6-7,4-6 |
| ITF Thailand F4 | 2018/09/26 04:55 | Congsup Congcar v Shintaro Imai | 4-6,3-6 |
| ITF Thailand F4 | 2018/09/24 04:00 | Noppadol Noikor v Congsup Congcar | 2-6,3-6 |
| ITF Thailand F3 | 2018/09/05 03:50 | Pruchya Isarow v Congsup Congcar | 6-3,6-7,6-1 |
| ITF Thailand F3 | 2018/09/03 03:00 | Congsup Congcar v Kazuma Kawachi | 7-6,6-4 |
| ITF Thailand F2 | 2018/08/27 08:10 | Congsup Congcar v Adam El Mihdawy | 4-6,6-2,4-6 |
| ITF Thailand F1 | 2018/08/21 02:00 | Marco Brugnerotto v Congsup Congcar | 6-4,7-5 |
| ITF Indonesia F3 | 2018/08/07 02:50 | Congsup Congcar v Sho Shimabukuro | 6-4,2-6,4-6 |
| ITF Indonesia F2 Qual | 2018/07/31 02:00 | Congsup Congcar v David Agung Susanto | 4-6,4-6 |