Stadium: Court 4 Round: 27 Ground: Hardcourt outdoor
| Challenger Tampere | 2018/07/21 11:05 | Ivan Gakhov v Takashi Saito | 6-1,6-3 |
| Challenger Scheveningen Qual | 2018/07/14 10:00 | Takashi Saito v Alejandro Davidovich Fokina | 3-6,2-6 |
| ITF Japan F8 | 2018/06/13 02:25 | Takashi Saito v Kousuke Ogura | 6-2,4-6,6-1 |
| ITF Japan F7 | 2018/06/10 01:00 | Takashi Saito v Rio Noguchi | 6-3,6-4 |
| ITF Japan F7 | 2018/06/09 03:20 | Takashi Saito v Gengo Kikuchi | 4-6,7-6,6-3 |
| ITF Japan F7 | 2018/06/08 01:00 | Sora Fukuda v Takashi Saito | 1-6,6-2,4-6 |
| ITF Japan F7 | 2018/06/07 02:00 | Kaito Uesugi v Takashi Saito | 6-0,5-7,5-7 |
| ITF Japan F7 | 2018/06/05 03:35 | Arata Onozawa v Takashi Saito | 6-7,4-6 |
| ITF USA F20 Qual | 2018/07/23 16:20 | Matic Spec v Rowland Phillips | 6-3,6-7,6-4 |
| ITF USA F20 Qual | 2018/07/22 16:30 | Matic Spec v Eric Morris | 7-6,6-4 |
| ITF USA F19B Qual | 2018/07/16 15:00 | Felix Corwin v Matic Spec | 3-6,7-6,6-4 |
| ITF USA F19B Qual | 2018/07/15 15:00 | Matias Soto v Matic Spec | 1-6,2-6 |
| ITF USA F19B Qual | 2018/07/14 17:30 | Jason Kerst v Matic Spec | 1-6,2-6 |
| ITF USA F19 | 2018/07/06 15:00 | Evgeny Karlovskiy v Matic Spec | 1-6,7-5,6-4 |
| ITF USA F19 | 2018/07/05 14:00 | Matic Spec v Henry Craig | 6-3,6-3 |
| ITF USA F19 | 2018/07/04 17:40 | Matic Spec v Logan Smith | 7-6,0-6,6-3 |