11.06.18 | 1/4 | Yuuya Kibi/Arata Onozawa | Yuto Sakai/Yunosuke Tanaka | 6-2, 6-4 | | match details | Japan F8 | Carpet |
11.06.18 | 1st round | Yuto Sakai/Yunosuke Tanaka | Yuichiro Inui/Naru Shirafuji | 6-3, 6-2 | | match details |
12.03.18 | 1st round | Naoki Nakagawa/Yuta Shimizu | Yuto Sakai/Yunosuke Tanaka | 7-62, 4-6, 10-6 | | match details | Japan F2 | Hard |
05.03.18 | 1st round | Shintaro Imai/Takuto Niki | Yuto Sakai/Yunosuke Tanaka | 7-64, 6-2 | | match details | Japan F1 | Hard |
01.01.18 | 1/2 | Yuto Sakai/Yunosuke Tanaka | Jack Murray/Michael Zhu | 2-6, 6-4, 10-5 | | match details | Hong Kong | Hard |
01.01.18 | fin | Yuto Sakai/Yunosuke Tanaka | Shintaro Imai/Takuto Niki | 2-6, 6-3, 10-4 | | match details |
01.01.18 | 1st round | Yuto Sakai/Yunosuke Tanaka | Harri Heliovaara/Michael Kwong | 7-5, 6-1 | | match details |
01.01.18 | 1/4 | Yuto Sakai/Yunosuke Tanaka | Sora Fukuda/Soichiro Moritani | 6-4, 7-66 | | match details |
12.06.17 | fin | Yuto Sakai/Yunosuke Tanaka | Rio Noguchi/Yuta Shimizu | 6-3, 6-2 | | match details | Japan F8 | Carpet |
12.06.17 | 1st round | Yuto Sakai/Yunosuke Tanaka | Katsuki Nagao/Hiromasa Oku | 6-4, 6-2 | | match details |
12.06.17 | 1/4 | Yuto Sakai/Yunosuke Tanaka | Yuya Ito/Ken Onoda | 6-4, 5-7, 10-8 | | match details |
12.06.17 | 1/2 | Yuto Sakai/Yunosuke Tanaka | Masaya Kobayashi/Yuki Mochizuki | 7-63, 6-3 | | match details |