| 12.10.15 | 1/4 | Katsuki Nagao/Hiromasa Oku | Yusei Fukuoka/Kazuya Tamura | 6-2, 6-2 |  | match details | Philippines F2 | Arcilla |
| 12.10.15 | 1/2 | Katsuki Nagao/Hiromasa Oku | Harry Bourchier/Wei-De Lin | 6-2, 6-2 |  | match details |
| 12.10.15 | fin | Francis Casey Alcantara/Johnny Arcilla | Katsuki Nagao/Hiromasa Oku | 6-2, 6-2 |  | match details |
| 12.10.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Leander Lazaro/Jatuporn Nalamphun | 6-2, 6-1 |  | match details |
| 05.10.15 | 1er ronda | Francis Casey Alcantara/Johnny Arcilla | Katsuki Nagao/Hiromasa Oku | 7-5, 6-3 |  | match details | Philippines F1 | Arcilla |
| 07.09.15 | 1/4 | Katsuki Nagao/Hiromasa Oku | Yong-Bum Seo/Geon Ju Shin | 6-1, 6-3 |  | match details | Korea F7 | Arcilla |
| 07.09.15 | 1/2 | Katsuki Nagao/Hiromasa Oku | Soon-Woo Kwon/Ji Hoon Son | 7-64, 5-7, 10-5 |  | match details |
| 07.09.15 | fin | Cheong-Eui Kim/Sang-Woo Noh | Katsuki Nagao/Hiromasa Oku | 6-1, 6-4 |  | match details |
| 07.09.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Woo Hyeok Jang/Jae Hwan Kim | 6-3, 6-2 |  | match details |
| 31.08.15 | 1er ronda | Hyun-Woo Nam/Min-Kyu Song | Katsuki Nagao/Hiromasa Oku | 6-3, 3-6, 10-7 |  | match details | Korea F6 | Arcilla |
| 24.08.15 | 1/2 | Ji Sung Nam/Sang-Woo Noh | Katsuki Nagao/Hiromasa Oku | 6-4, 3-6, 10-3 |  | match details | Korea F5 | Difícil |
| 24.08.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Hogi Kang/Hyeong Don Kim | 6-0, 6-1 |  | match details |
| 24.08.15 | 1/4 | Katsuki Nagao/Hiromasa Oku | Jea Moon Lee/Daniel Yoo | Jea Moon Lee/Daniel Yoo - walk over |  | match details |
| 17.08.15 | 1er ronda | Jae-Won Choi/Ju-Hae Moon | Katsuki Nagao/Hiromasa Oku | 6-3, 6-3 |  | match details | Korea F4 | Difícil |
| 22.06.15 | 1/4 | Katsuki Nagao/Hiromasa Oku | Tadayuki Longhi/Koichi Sano | 1-6, 6-1, 10-2 |  | match details | Japan F8 | Arcilla |
| 22.06.15 | 1/2 | Katsuki Nagao/Hiromasa Oku | Makoto Ochi/Renta Tokuda | 6-3, 7-67 |  | match details |
| 22.06.15 | fin | Katsuki Nagao/Hiromasa Oku | Shunrou Takeshima/Yusuke Watanuki | 6-2, 6-1 |  | match details |
| 22.06.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Oh-Hee Kwon/Ju-Hae Moon | 6-2, 6-0 |  | match details |
| 15.06.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Tetsuro Habusawa/Akito Higa | 6-0, 6-2 |  | match details | Japan F7 | Alfombra |
| 15.06.15 | 1/2 | Arata Onozawa/Keisuke Watanuki | Katsuki Nagao/Hiromasa Oku | 3-6, 6-2, 10-6 |  | match details |
| 15.06.15 | 1/4 | Katsuki Nagao/Hiromasa Oku | Tadayuki Longhi/Koichi Sano | 6-2, 6-2 |  | match details |
| 08.06.15 | 1er ronda | Yuuya Kibi/Takuto Niki | Katsuki Nagao/Hiromasa Oku | 6-4, 6-73, 10-3 |  | match details | Japan F6 | Difícil |
| 01.06.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Masakatsu Noguchi/Masaki Sasai | 6-3, 6-1 |  | match details | Japan F5 | Arcilla |
| 01.06.15 | 1/2 | Sho Katayama/Arata Onozawa | Katsuki Nagao/Hiromasa Oku | 6-3, 7-65 |  | match details |
| 01.06.15 | 1/4 | Katsuki Nagao/Hiromasa Oku | Tadayuki Longhi/Koichi Sano | 6-4, 6-2 |  | match details |
| 25.05.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Joshua Cepeda/Brian Tuncap Jr | 6-0, 6-1 |  | match details | Guam F1 | Difícil |
| 25.05.15 | 1/4 | Katsuki Nagao/Hiromasa Oku | Chas Okamoto/Mark Oljaca | 7-64, 6-3 |  | match details |
| 25.05.15 | 1/2 | Masakatsu Noguchi/Masaki Sasai | Katsuki Nagao/Hiromasa Oku | 4-6, 6-2, 16-14 |  | match details |
| 27.04.15 | 1er ronda | Ken Onoda/Masato Shiga | Katsuki Nagao/Hiromasa Oku | 6-4, 6-74, 10-7 |  | match details | Thailand F2 | Difícil |
| 20.04.15 | 1er ronda | Warit Sornbutnark/Kittiphong Wachiramanowong | Katsuki Nagao/Hiromasa Oku | 7-65, 1-6, 10-7 |  | match details | Thailand F1 | Difícil |
| 30.03.15 | 1er ronda | Ryota Kobori/Yuto Sakai | Katsuki Nagao/Hiromasa Oku | 6-3, 1-6, 10-7 |  | match details | Japan F4 | Difícil |
| 23.03.15 | 1er ronda | Yuichi Ito/Chu-Huan Yi | Katsuki Nagao/Hiromasa Oku | 6-3, 6-3 |  | match details | Japan F3 | Difícil |
| 16.03.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Chih-Jen Ho/Jui-Chen Hung | 6-3, 6-4 |  | match details | Japan F2 | Difícil |
| 16.03.15 | 1/4 | Yuichi Ito/Chu-Huan Yi | Katsuki Nagao/Hiromasa Oku | 4-6, 7-69, 10-8 |  | match details |
| 09.03.15 | 1er ronda | Katsuki Nagao/Hiromasa Oku | Jarryd Chaplin/Ben Mclachlan | 6-2, 6-73, 11-9 |  | match details | Japan F1 | Difícil |
| 09.03.15 | 1/4 | Yuichi Ito/Arata Onozawa | Katsuki Nagao/Hiromasa Oku | 0-6, 6-2, 10-7 |  | match details |