Round: 62 Ground: Clay
| ITF Japan F8 | 2018/06/09 04:45 | Masaki Sasai v Masayoshi Ono | 5-7,4-6 |
| ITF Japan F8 | 2018/06/09 01:00 | Yasunori Hashikawa v Masayoshi Ono | 6-2,4-6,4-6 |
| ITF Japan F7 Qual | 2018/06/03 01:00 | Yuichiro Inui v Masayoshi Ono | 7-5,6-2 |
| ITF Czech Republic F1 | 2018/05/12 09:00 | Adam Blecha v Masayoshi Ono | 6-3,6-2 |
| ITF Sweden F1 Qual | 2018/05/05 08:00 | Masayoshi Ono v Simon Yitbarek | 2-6,6-4,4-6 |
| ITF Japan F6 Qual | 2018/04/09 02:45 | Aoran Wang v Masayoshi Ono | 3-6,6-2,6-2 |
| ITF Japan F6 Qual | 2018/04/08 04:00 | Masayoshi Ono v Ken Onoda | 6-2,6-4 |
| ITF Greece F4 | 2018/03/18 09:30 | Maksim Tikhomirov v Masayoshi Ono | 7-6,6-2 |
| ITF Japan F8 | 2018/06/09 01:00 | Yutaro Matsuzaki v David Barclay | 1-6,6-4,6-3 |
| ITF Japan F6 Qual | 2018/04/07 01:00 | Yutaro Matsuzaki v Teppei Uesugi | 4-6,0-6 |
| ITF Greece F3 | 2018/03/10 10:00 | Remy Bertola v Yutaro Matsuzaki | 6-4,6-3 |
| ITF Greece F2 | 2018/03/04 09:30 | Yutaro Matsuzaki v Maksim Tikhomirov | 0-6,3-6 |
| ITF Greece F2 | 2018/03/03 07:30 | Alexander Donski v Yutaro Matsuzaki | 4-6,4-6 |
| ITF Turkey F8 | 2018/02/24 07:00 | Moritz Thiem v Yutaro Matsuzaki | 6-7,6-2,6-4 |
| ITF Turkey F7 | 2018/02/18 09:00 | Yutaro Matsuzaki v Julian Bradley | 1-6,0-6 |
| ITF Turkey F7 | 2018/02/17 06:30 | Yutaro Matsuzaki v James Allemby | 6-4,3-6,6-3 |