| ITF Japan F5 | 2014/06/04 01:00 | Hiromasa Oku v Katsuki Nagao | 7-6,7-6 |
| ITF Japan F5 | 2014/06/02 01:00 | Issei Okamura v Katsuki Nagao | 1-6,6-7 |
| ITF Guam F1 | 2014/05/30 00:00 | Yuya Kibi v Katsuki Nagao | 6-3,6-3 |
| ITF Guam F1 | 2014/05/29 00:00 | Kody Pearson v Katsuki Nagao | 1-6,1-6 |
| ITF Japan F4 | 2014/04/02 01:00 | Shunrou Takeshima v Katsuki Nagao | 6-4,6-4 |
| ITF Japan F3 | 2014/03/26 01:00 | Duckhee Lee v Katsuki Nagao | 6-0,6-7,7-6 |
| ITF Japan F5 | 2014/06/05 01:00 | Takuto Niki v Jui-Chen Hung | 6-2,6-4 |
| ITF Japan F5 | 2014/06/04 03:35 | Kazuki Nishiwaki v Jui-Chen Hung | 4-6,6-7 |
| ITF Japan F5 | 2014/06/03 04:00 | David Barclay v Jui-Chen Hung | 2-6,3-6 |
| ITF Guam F1 | 2014/05/28 00:00 | Jui-Chen Hung v Ko Suzuki | 7-6,5-7,4-6 |
| ITF China F5 | 2014/04/16 05:15 | Di Wu v Jui-Chen Hung | 6-0,6-3 |
| ITF China F4 | 2014/04/08 04:00 | Jui-Chen Hung v Liang-Chi Huang | 2-6,4-6 |
| ITF Japan F2 | 2014/03/17 02:50 | Jui-Chen Hung v Shuichi Sekiguchi | 3-6,6-4,4-6 |
| ITF Japan F1 | 2014/03/12 03:00 | Yuichi Ito v Jui-Chen Hung | 6-4,6-0 |