Stadium: Court 2 Round: 26
| ITF Japan F1 | 2018/03/08 03:10 | Ito, Yuichi v Saito, Takashi | 2-6,4-6 |
| ITF Japan F3 | 2014/03/27 03:05 | Saito, Takashi v Ito, Yuichi | 3-6,1-6 |
| ITF Thailand F3 | 2018/09/04 04:20 | Ito, Yuichi v Ono, Masayoshi | 7-6,6-3 |
| ITF Thailand F2 | 2018/08/28 05:35 | Thanapet Chanta v Ito, Yuichi | 6-4,6-4 |
| ITF Korea F5 | 2018/08/21 03:00 | Ito, Yuichi v Oh, Chan-Yeong | 7-6,6-7,3-6 |
| ITF Malaysia F3 | 2018/07/17 02:00 | Ito, Yuichi v Du Toit, Lance-Pierre | 2-6,6-4,3-6 |
| ITF Malaysia F2 | 2018/07/10 02:00 | Ito, Yuichi v Pervolarakis, Michail | 2-6,2-6 |
| ITF Guam F1 | 2018/06/24 00:00 | Yuta Shimizu v Ito, Yuichi | 6-3,6-2 |
| ITF Guam F1 | 2018/06/23 02:10 | Thomas Fancutt v Ito, Yuichi | 6-7,4-6 |
| ITF Guam F1 | 2018/06/22 01:35 | Ito, Yuichi v Johansson, Niklas | 7-6,6-1 |
| ITF Thailand F3 | 2018/09/04 06:55 | Kovapitukted, Palaphoom v Saito, Takashi | 6-4,4-6,2-6 |
| ITF Thailand F2 | 2018/08/29 04:00 | Saito, Takashi v Farren, Connor | 6-2,6-1 |
| ITF Thailand F2 | 2018/08/28 07:10 | Saito, Takashi v Wattanakul, Pol | 6-3,3-6,6-3 |
| Meerbusch, Allemagne, Qualifications | 2018/08/12 14:25 | Saito, Takashi v Alexandre Muller | 3-6,0-6 |
| ITF Belgium F7 | 2018/08/09 09:20 | Saito, Takashi v Benjamin Pietri | 6-7,4-6 |
| ITF Belgium F7 | 2018/08/07 16:35 | Saito, Takashi v Vadym Ursu | 6-7,6-3,7-6 |
| 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 |