Ground: Synthetic outdoor
| ITF Japan F6 | 2015/06/10 01:30 | Keisuke Watanuki v Hiromasa Oku | 6-2,6-3 |
| ITF Japan F5 | 2015/06/06 03:00 | Takashi Saito v Hiromasa Oku | 6-3,6-1 |
| ITF Japan F5 | 2015/06/05 02:35 | Hiromasa Oku v Makoto Ochi | 2-6,6-2,6-4 |
| ITF Japan F5 | 2015/06/04 01:00 | Hiromasa Oku v Yuichi Ito | 6-0,6-1 |
| ITF Japan F5 | 2015/06/02 03:15 | Hiromasa Oku v Koichi Sano | 6-4,3-6,6-2 |
| ITF Guam F1 | 2015/05/29 00:00 | Hiromasa Oku v Takao Suzuki | 6-4,6-7,5-7 |
| ITF Guam F1 | 2015/05/27 00:00 | Hiromasa Oku v Masayoshi Ono | 6-0,6-2 |
| ITF Guam F1 | 2015/05/26 00:00 | Hiromasa Oku v Masaki Sasai | 6-1,6-1 |
| ITF Japan F6 | 2015/06/10 01:30 | Ku Keon Kang v Jumpei Yamasaki | 4-6,6-7 |
| ITF Korea F1 | 2015/05/17 02:00 | Dong-Kyu Lee v Ku Keon Kang | 7-6,6-2 |
| ITF Turkey F36 | 2014/10/15 06:30 | Ku Keon Kang v Filippo Baldi | 7-5,6-7,2-6 |
| ITF Turkey F36 | 2014/10/13 06:30 | Ku Keon Kang v Moritz Dettinger | 6-3,6-3 |
| ITF Turkey F35 | 2014/10/08 07:00 | Rogelio Siller v Ku Keon Kang | 6-3,3-6,6-3 |
| ITF Turkey F35 | 2014/10/06 08:00 | Ku Keon Kang v Chayanon Kaewsuto | 6-4,6-1 |
| ITF Turkey F35 | 2014/10/05 07:00 | Ku Keon Kang v Durukan Durmus | 6-0,4-6,7-5 |
| ITF Turkey F34 | 2014/09/29 07:00 | Young Seok Kim v Ku Keon Kang | 7-6,6-3 |