| ITF Japan F8 | 2018/06/09 01:00 | Masaki Sasai v Yusei Fukuoka | 6-0,6-1 |
| ITF Kazakhstan F5 Qual | 2018/04/22 05:00 | Yerassyl Murat v Yusei Fukuoka | 6-3,6-1 |
| ITF Kazakhstan F4 Qual | 2018/04/15 07:40 | Yusei Fukuoka v Yahor Yatsyk | 3-6,3-6 |
| ITF Kazakhstan F4 Qual | 2018/04/14 09:15 | Yusei Fukuoka v Tamerlan Kalkenov | 6-1,6-1 |
| ITF Japan F6 Qual | 2018/04/07 03:30 | Yusei Fukuoka v Rimpei Kawakami | 1-6,0-6 |
| ITF Greece F5 | 2018/03/24 10:00 | Yusei Fukuoka v Marvin Schramm | 4-6,5-7 |
| ITF Greece F4 | 2018/03/17 07:30 | Yusei Fukuoka v Andrej Glvac | 2-6,3-6 |
| ITF Greece F3 | 2018/03/10 10:00 | Yusei Fukuoka v Leevi Saatela | 4-6,1-6 |
| ITF Malaysia F1 Qual | 2018/07/01 01:00 | Marlino Pascual v Roy Hobbs | 4-6,6-7 |
| ITF Sri Lanka F2 | 2018/06/18 10:30 | Daniel Mora v Roy Hobbs | 6-3,6-1 |
| ITF Singapore F3 | 2018/05/29 02:00 | Michael Look v Roy Hobbs | 6-3,7-6 |
| ITF Singapore F2 | 2018/05/22 04:00 | Roy Hobbs v Calum Puttergill | 2-6,2-6 |
| ITF Singapore F1 | 2018/05/15 03:10 | Roy Hobbs v Tom Evans | 4-6,2-6 |
| Cupa Davis | 2018/02/03 06:00 | Roy Hobbs v Abdulrahman Al Janahi | 7-6,6-1 |
| Cupa Davis | 2018/02/02 06:00 | Roy Hobbs v Elyas Abdulnabi | 7-6,6-4 |
| Cupa Davis | 2018/02/01 06:00 | Roy Hobbs v Atlymyrat Gurbanov | 6-2,6-2 |