Stadium: Court 8 Round: 62 Ground: Clay
| ITF Australia F8 | 2015/10/12 01:45 | Yuichiro Inui v Barclay, David | 1-6,7-6,1-6 |
| ITF Japan F5 | 2015/05/31 01:00 | Yuichiro Inui v Barclay, David | 6-3,3-6,6-1 |
| ITF Australia F4 Qual | 2018/03/26 01:10 | Addison, Aaron v Barclay, David | 7-5,6-4 |
| ITF Australia F4 Qual | 2018/03/25 00:30 | Tran, Brian v Barclay, David | 4-6,5-7 |
| ITF Australia F4 Qual | 2018/03/24 03:30 | Barclay, David v Stefan Storch | 6-2,6-0 |
| ITF Australia F3 Qual | 2018/03/18 00:30 | Miles, Lewis v Barclay, David | 6-4,6-4 |
| ITF Australia F3 Qual | 2018/03/17 01:30 | Barclay, David v Tsoronis, Socrates Leon | 7-5,6-4 |
| ITF Australia F2 Qual | 2018/03/03 00:00 | Commings, Michael v Barclay, David | 3-6,6-2,6-4 |
| ITF Australia F1 Qual | 2018/02/25 23:00 | Kody Pearson v Barclay, David | 1-6,6-4,6-4 |
| ITF Australia F1 Qual | 2018/02/24 00:00 | Barclay, David v Jayden Court | 6-7,7-5,6-3 |
| ITF Japan F5 | 2018/03/31 00:30 | Yuichiro Inui v Liu, Shao-Fan | 0-6,4-6 |
| Turkey F10, Singles Qualifying | 2018/03/10 08:30 | Boris Butulija v Yuichiro Inui | 2-6,6-4,6-0 |
| ITF Turkey F9 | 2018/03/04 07:00 | Madaras, Dragos Nicolae v Yuichiro Inui | 6-1,6-1 |
| Turkey F8, Singles Qualifying | 2018/02/25 07:30 | Kenneth Raisma v Yuichiro Inui | 7-6,6-1 |
| ITF Turkey F7 | 2018/02/17 11:00 | Yuichiro Inui v Krainer, L. | 2-6,1-6 |
| Turkey F6, Singles Qualifying | 2018/02/10 09:00 | Yuichiro Inui v Felipe Meligeni Rodrigues Alves | 4-6,4-6 |
| ITF Turkey F5 | 2018/02/05 07:30 | Nam, Ji Sung v Yuichiro Inui | 7-5,6-0 |
| ITF Turkey F5 | 2018/02/04 07:30 | Allemby, James v Yuichiro Inui | 4-6,2-6 |