Round: 62 Ground: Clay
| ITF Japan F2 | 2017/03/12 01:00 | Yusei Fukuoka v Masaki Sasai | 1-6,1-6 |
| ITF Japan F4 | 2016/03/26 04:00 | Yusei Fukuoka v Masaki Sasai | 2-6,1-6 |
| ITF Japan F7 Qual | 2018/06/03 01:00 | Masaki Sasai v Shoji Sato | 6-1,7-5 |
| ITF Japan F7 Qual | 2018/06/02 01:00 | Masaki Sasai v Takuya Kureoka | 6-2,6-3 |
| ITF Japan F6 Qual | 2018/04/08 01:00 | Hajime Nakashima v Masaki Sasai | 6-2,6-1 |
| ITF Japan F5 | 2018/04/02 03:40 | Masaki Sasai v Юсуке Такахаши | 6-3,3-6,3-6 |
| ITF Japan F5 | 2018/04/01 00:30 | Ken Onoda v Masaki Sasai | 3-6,1-6 |
| ITF Japan F4 | 2018/03/25 01:00 | Soichiro Moritani v Masaki Sasai | 6-4,6-3 |
| ITF Japan F4 | 2018/03/24 00:00 | Takuya Kumasaka v Masaki Sasai | 3-6,6-4,3-6 |
| ITF Japan F3 | 2018/03/18 01:30 | Исей Окамура v Masaki Sasai | 6-3,6-1 |
| 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 Римпеи Каваками | 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 Лееви Саатела | 4-6,1-6 |
| ITF Greece F2 | 2018/03/04 09:30 | Yusei Fukuoka v Ондрей Кръстев | 2-6,4-6 |