Stadium: Swiss Post Court Round: 25 Ground: Clay
| ITF Germany F10 | 2018/07/31 10:00 | Manuel Guinard v Saito, Takashi | 7-6,0-6,6-1 |
| Challenger Tampere | 2018/07/21 11:05 | Ivan Gakhov v Saito, Takashi | 6-1,6-3 |
| Challenger Scheveningen Qual | 2018/07/14 10:00 | Saito, Takashi v Alejandro Davidovich Fokina | 3-6,2-6 |
| ITF Japan F8 | 2018/06/13 02:25 | Saito, Takashi v Kousuke Ogura | 6-2,4-6,6-1 |
| ITF Japan F7 | 2018/06/10 01:00 | Saito, Takashi v Rio Noguchi | 6-3,6-4 |
| ITF Japan F7 | 2018/06/09 03:20 | Saito, Takashi v Kikuchi, Gengo | 4-6,7-6,6-3 |
| ITF Japan F7 | 2018/06/08 01:00 | Sora Fukuda v Saito, Takashi | 1-6,6-2,4-6 |
| ITF Japan F7 | 2018/06/07 02:00 | Kaito Uesugi v Saito, Takashi | 6-0,5-7,5-7 |
| ITF Belgium F7 Qual | 2018/08/06 09:00 | Vadym Ursu v Pisane, Tom | 2-6,6-2,6-2 |
| ITF Belgium F7 Qual | 2018/08/05 08:00 | Vadym Ursu v Duquesne, Goran | 7-5,6-1 |
| Challenger - Prague | 2018/07/22 08:00 | Vadym Ursu v Konecny, Michal | 7-6,2-6,6-2 |
| Challenger - Prague | 2018/07/21 08:00 | Doumbia, Sadio v Vadym Ursu | 7-6,4-6,4-6 |
| Germany F8, Singles | 2018/07/18 10:50 | Vadym Ursu v Pena Lopez, Manuel | 1-6,5-7 |
| ITF Germany F8 Qual | 2018/07/16 14:40 | Vadym Ursu v Hamish Stewart | 7-6,6-3 |
| ITF Germany F8 Qual | 2018/07/15 12:30 | Vadym Ursu v Tholl, Christophe | 4-6,6-1,6-1 |
| ITF Germany F8 Qual | 2018/07/15 08:30 | Vadym Ursu v Stino, Mario | 7-5,6-4 |