ITF M15 Tsukuba 03/25 07:30 54 Ryotaro Matsumura v Jumpei Yamasaki 7-5,7-6
ITF M15 Tsukuba 03/24 01:00 54 Taiyo Yamanaka v Jumpei Yamasaki 3-6,1-6
ITF M15 Nishi-Tokyo 03/19 01:00 54 Jumpei Yamasaki v Taiyo Yamanaka 5-7,3-6
ITF M15 Nakhon Si Thammarat 02/22 03:30 26 Nam Hoang Ly v Jumpei Yamasaki 6-4,6-2
ITF M15 Nakhon Si Thammarat 02/21 03:55 25 Leo Vithoontien v Jumpei Yamasaki 5-7,7-6,0-6
ITF M15 Nakhon Si Thammarat 02/19 04:15 54 Jumpei Yamasaki v Corban Crowther 7-5,7-6
ITF M15 Nakhon Si Thammarat Qual 02/18 07:00 54 Jumpei Yamasaki v Anapat Timangkul 6-2,4-6,10-2
ITF M15 Nakhon Si Thammarat 02/12 04:45 54 Jumpei Yamasaki v Krittin Koaykul 4-6,3-6
ITF M15 Nakhon Si Thammarat 02/11 06:45 54 Jumpei Yamasaki v Suphawat Saeoui Retired
ITF M15 Yanagawa 12/30 01:00 28 Duckhee Lee v Jumpei Yamasaki 6-1,3-6,6-1
ITF M15 Yanagawa 12/29 00:50 27 Jumpei Yamasaki v Takuya Kumasaka 6-1,6-4
ITF M15 Yanagawa 12/28 00:55 26 Jumpei Yamasaki v Yamato Sueoka 7-5,6-1
ITF M15 Yanagawa 12/26 03:25 25 Kazuki Nishiwaki v Jumpei Yamasaki 3-6,3-6
ITF M15 Yanagawa 12/22 04:50 27 Jumpei Yamasaki v Hikaru Shiraishi 3-6,4-6
ITF M15 Yanagawa 12/21 08:45 26 Koki Matsuda v Jumpei Yamasaki 1-6,6-1,3-6
ITF M15 Yanagawa 12/21 00:30 25 Shu Muto v Jumpei Yamasaki 0-6,2-6
ITF M25 Gold Coast 11/30 01:15 26 Kody Pearson v Jumpei Yamasaki 7-6,7-6
ITF M25 Gold Coast 11/28 01:50 25 Jumpei Yamasaki v Nam Hoang Ly 2-6,6-4,6-3
ITF M25 Brisbane 11/22 04:35 25 Makoto Ochi v Jumpei Yamasaki 7-6,6-3
ITF M15 Kuching 11/16 05:35 26 Hikaru Shiraishi v Jumpei Yamasaki 7-5,6-1
ITF M15 Kuching 11/15 04:20 25 Jumpei Yamasaki v Thijmen Loof 7-6,7-6
ITF M25 Takasaki 09/20 04:20 25 Jumpei Yamasaki v Sora Fukuda 1-6,6-2,4-6
ITF M25 Sapporo 09/15 03:30 26 Shuichi Sekiguchi v Jumpei Yamasaki 6-3,7-5
ITF M25 Sapporo 09/08 02:30 27 Shuichi Sekiguchi v Jumpei Yamasaki 6-4,6-3
ITF M25 Sapporo 09/07 02:55 26 Takuya Kumasaka v Jumpei Yamasaki Retired
ITF M25 Sapporo 09/05 02:00 25 Jumpei Yamasaki v Kosuke Ogura 6-4,6-4
ITF M25 Jakarta 08/15 04:20 25 Sora Fukuda v Jumpei Yamasaki 7-5,6-4
ITF M25 Jakarta 08/08 02:30 25 Jea Moon Lee v Jumpei Yamasaki 6-0,7-5
ITF M25 Changwon 06/13 01:00 25 Duckhee Lee v Jumpei Yamasaki Retired
ITF M25 Daegu 06/09 02:55 27 Jumpei Yamasaki v Dominik Palan 4-6,2-6