ITF - M15 Sharm El Sheikh 02/08 07:30 62 Zsombor Velcz v Onishi, Ken 6-3,6-4
ITF - M15 Sharm El Sheikh 02/07 09:30 62 Onishi, Ken v Taisei Ichikawa 3-6,6-2,12-10
ITF - M15 Sharm El Sheikh 01/31 17:30 62 Miladinovic, Marko v Onishi, Ken 7-5,6-2
ITF M15 Cairo 01/27 12:15 25 Aristotelis Thanos v Onishi, Ken 6-3,7-6
ITF M15 Cairo 01/26 07:55 62 Dzhavakian, Yurii v Onishi, Ken 4-6,1-6
ITF M15 Cairo 01/25 08:00 62 Onishi, Ken v Maikel De Boes 6-4,3-6,18-16
ITF M15 Cairo 01/24 11:30 62 Onishi, Ken v Mathys Erhard 6-4,6-4
ITF M15 Cairo 01/17 10:00 62 Roncalli, Simone v Onishi, Ken 6-3,6-1
ITF M15 Cairo 01/11 08:00 62 Onishi, Ken v Simon Beaupain 3-6,4-6
ITF - M15 Sharm El Sheikh 02/24 10:00 44 Asrawy, Amr v Onishi, Ken 4-6,6-0,10-8
ITF - M15 Sharm El Sheikh 02/17 09:00 44 Piotr Grynkowski v Onishi, Ken 6-1,6-4
ITF - M15 Sharm El Sheikh 02/16 10:00 44 Onishi, Ken v Zharkov, Artem Retired
Hong Kong, Simples M-ITF-HKG-01A 01/08 09:30 25 Makoto Ochi v Onishi, Ken 7-6,6-2
Hong Kong, Simples M-ITF-HKG-01A 01/07 04:45 54 Kosuke Ogura v Onishi, Ken 5-7,4-6
Hong Kong, Simples M-ITF-HKG-01A 01/06 02:00 54 Shohei Chikami v Onishi, Ken 4-6,1-6
Te Anau, Simples M-ITF-NZL-01A 12/30 23:00 25 Elliot Benchetrit v Onishi, Ken 7-5,6-1
Challenger Kobe 11/06 01:30 25 Luke Saville v Onishi, Ken 6-2,6-2
Taipei, Singles M-ITF-TPE-01A 07/22 04:00 54 Lin, Han-Chih v Onishi, Ken 6-7,6-3,10-6
Taipei, Singles M-ITF-TPE-01A 07/15 02:00 54 Liao, Hao-Hsiang v Onishi, Ken 7-6,7-6
Gimcheon, Singles M-ITF-KOR-03A 06/17 05:20 54 Moon, Ju-Hae v Onishi, Ken 2-6,6-3,10-6
Gimcheon, Singles M-ITF-KOR-03A 06/13 01:30 26 Onishi, Ken v Hong, Seong Chan 1-6,2-6
Gimcheon, Singles M-ITF-KOR-03A 06/12 01:00 25 Onishi, Ken v Cing-Yang Meng 6-4,6-4
Gimcheon, Singles M-ITF-KOR-03A 06/11 01:00 54 Onishi, Ken v Shin, Seung-Hun 7-6,6-3
ITF M15 Daegu 06/05 01:00 25 Onishi, Ken v Kwon, OH-Hee 2-6,2-6
ITF M15 Daegu 06/04 03:15 54 Onishi, Ken v Lee, Young Seok Retired
ITF M15 Daegu 06/03 02:40 54 Onishi, Ken v Lee, Sin Woo 6-1,6-7,10-1
Tabarka, Singles Qualifying M-ITF-TUN-41A 05/15 12:40 25 Onishi, Ken v Bianchi, Nicolas 6-4,1-6,4-6
Tabarka, Singles Qualifying M-ITF-TUN-41A 05/09 08:30 26 Onishi, Ken v Perchicot, Mathieu 0-6,0-6
Tabarka, Singles Qualifying M-ITF-TUN-41A 05/08 09:40 25 Kazuma Kawachi v Onishi, Ken 7-6,5-7,0-6
Tabarka, Singles Qualifying M-ITF-TUN-41A 05/01 11:10 25 Lakat, Florian v Onishi, Ken 6-3,4-6,6-0