| ITF Japan F6 Qual | 2014/06/08 09:00 | David Barclay v Keisuke Watanuki | 4-6,2-6 |
| ITF Japan F3 | 2014/03/26 02:50 | Τακούτο Νίκι v Keisuke Watanuki | 6-3,6-1 |
| ITF Japan F2 | 2014/03/17 03:10 | Keisuke Watanuki v Masato Shiga | 6-7,4-6 |
| ITF Japan F6 Qual | 2014/06/07 00:00 | Yusei Fukuoka v Koichi Sano | 0-6,2-6 |
| ITF Japan F5 | 2014/06/03 02:30 | Koichi Sano v Yuya Kibi | 4-6,2-6 |
| ITF Guam F1 | 2014/05/27 02:45 | Ζεβάν Νεντουντσεζιγιάν v Koichi Sano | 6-2,6-4 |