Stadium: Court 5 Round: 62 Ground: Clay
| 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 Greece F2 | 2018/03/04 09:30 | Yusei Fukuoka v Ondrej Krstev | 2-6,4-6 |
| ITF Greece F2 | 2018/03/03 07:30 | Alexey Dubinin v Yusei Fukuoka | 1-6,1-6 |
| ITF Greece F1 | 2018/02/24 11:00 | Yusei Fukuoka v Athanasios Bilis | 1-6,6-4,6-7 |
| ITF Turkey F4 | 2018/01/27 07:30 | Dan Dowson v Yusei Fukuoka | 6-4,6-1 |
| ITF Turkey F3 | 2018/01/20 07:00 | Vincentiu A Niculescu v Yusei Fukuoka | 3-6,6-2,6-3 |
| ITF Japan F5 | 2018/04/02 04:35 | Rimpei Kawakami v Naoki Tajima | 3-6,4-6 |
| ITF Japan F5 | 2018/04/01 00:30 | Rio Noguchi v Rimpei Kawakami | 4-6,2-6 |
| ITF Japan F5 | 2018/03/31 00:30 | Rimpei Kawakami v Aoran Wang | 6-3,4-6,6-2 |
| ITF Japan F3 | 2018/03/18 01:00 | Shinji Hazawa v Rimpei Kawakami | 6-3,6-3 |
| ITF Japan F3 | 2018/03/17 04:00 | Rimpei Kawakami v Naru Shirafuji | 6-3,6-2 |
| ITF Japan F3 | 2018/03/17 00:30 | Tomohiro Masabayashi v Rimpei Kawakami | 2-6,4-6 |
| ITF Japan F2 | 2018/03/13 00:30 | Issei Okamura v Rimpei Kawakami | 6-2,6-4 |
| ITF Turkey F4 | 2018/01/29 08:00 | Vladislav Melnic v Rimpei Kawakami | 7-5,6-3 |