Stadium: Court 12 Round: 62 Ground: Clay
| 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 |
| ITF Turkey F6 | 2018/02/10 09:00 | Sho Shimabukuro v Yutaro Matsuzaki | 6-1,7-5 |
| ITF Japan F7 Qual | 2018/06/03 01:00 | Kazuki Shimizu v David Barclay | 6-0,6-4 |
| ITF Japan F6 Qual | 2018/04/08 01:00 | Takuya Kumasaka v David Barclay | 5-7,6-3,6-1 |
| ITF Japan F6 Qual | 2018/04/07 01:00 | David Barclay v Yuichiro Inui | 1-6,7-6,6-4 |
| ITF Australia F4 Qual | 2018/03/26 01:10 | Aaron Addison v David Barclay | 7-5,6-4 |
| ITF Australia F4 Qual | 2018/03/25 00:30 | Brian Tran v David Barclay | 4-6,5-7 |
| ITF Australia F4 Qual | 2018/03/24 03:30 | David Barclay v Stefan Storch | 6-2,6-0 |
| ITF Australia F3 Qual | 2018/03/18 00:30 | Lewis Miles v David Barclay | 6-4,6-4 |
| ITF Australia F3 Qual | 2018/03/17 01:30 | David Barclay v Socrates Leon Tsoronis | 7-5,6-4 |