Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF Serbia F6 | 2015/07/18 11:00 | David Barclay v Keisuke Numajiri | 2-6,2-6 |
| ITF Japan F1 | 2018/03/04 03:00 | Keisuke Numajiri v Masaki Sasai | 1-6,6-3,0-6 |
| ITF Turkey F8 | 2018/02/24 09:30 | Keisuke Numajiri v Ivan Davydov | 1-6,7-6,5-7 |
| ITF Turkey F7 | 2018/02/17 06:30 | Bogdan Bobrov v Keisuke Numajiri | 6-3,6-2 |
| ITF Vietnam F3 | 2017/11/21 06:10 | Sho Katayama v Keisuke Numajiri | 6-4,6-4 |
| ITF Vietnam F3 | 2017/11/20 04:00 | Lawrence Bataljin v Keisuke Numajiri | 6-4,2-6,6-3 |
| ITF Vietnam F2 | 2017/11/12 04:00 | Jakub Paul v Keisuke Numajiri | 6-7,6-4,6-1 |
| ITF Malaysia F3 | 2017/10/29 00:00 | Yuichi Ito v Keisuke Numajiri | 6-4,6-2 |
| ITF Malaysia F3 | 2017/10/28 01:00 | Keisuke Numajiri v Alex Hunt | 6-0,6-1 |
| ITF Australia F2 Qual | 2018/03/03 00:00 | Michael Commings v David Barclay | 3-6,6-2,6-4 |
| ITF Australia F1 Qual | 2018/02/25 23:00 | Kody Pearson v David Barclay | 1-6,6-4,6-4 |
| ITF Australia F1 Qual | 2018/02/24 00:00 | David Barclay v Jayden Court | 6-7,7-5,6-3 |
| Challenger Canberra Qual | 2018/01/06 00:15 | David Barclay v Jaimee Floyd Angele | 5-7,6-4,5-7 |
| Challenger Canberra 2 Qual | 2017/10/28 00:20 | Dane Propoggia v David Barclay | 6-2,6-4 |
| ITF Australia F7 Qual | 2017/10/07 01:00 | Mayez Jupiter Elrich v David Barclay | 2-6,6-4,6-4 |
| ITF Australia F6 | 2017/09/30 04:00 | David Barclay v Edward Bourchier | 2-6,2-6 |
| ITF Australia F6 | 2017/09/29 23:30 | Patrick Kotan v David Barclay | 6-1,5-7,1-6 |