Round: 44 Ground: Hardcourt outdoor
| ITF Japan F4 | 2015/03/29 00:00 | Numajiri, Keisuke v Onoda, Ken | 6-0,1-6,6-3 |
| ITF Japan F2 | 2016/03/12 00:30 | Numajiri, Keisuke v Watanuki, Keisuke | 6-2,2-6,1-6 |
| ITF Japan F1 | 2016/03/05 03:00 | Numajiri, Keisuke v Kaito Uesugi | 2-6,6-3,3-6 |
| ITF Turkey F5 | 2016/02/01 09:30 | Numajiri, Keisuke v Kishi, Ryota | 2-6,2-6 |
| ITF Turkey F5 | 2016/01/30 08:00 | Numajiri, Keisuke v Balla, Peter | 4-6,6-3,6-4 |
| ITF Turkey F4 | 2016/01/23 08:00 | Domagoj Biljesko v Numajiri, Keisuke | 6-0,6-1 |
| ITF Turkey F3 | 2016/01/18 09:00 | Vadym Ursu v Numajiri, Keisuke | 6-7,6-3,6-4 |
| ITF Turkey F3 | 2016/01/17 08:30 | Major, Philip Wilbert v Numajiri, Keisuke | 3-6,3-6 |
| Qatar F5, Simples | 2015/12/09 13:30 | Joris De Loore v Numajiri, Keisuke | 6-1,6-3 |
| ITF Japan F3 | 2016/03/19 01:00 | Zeng, Shi Hong v Onoda, Ken | 4-6,2-6 |
| ITF Japan F2 | 2016/03/13 01:00 | Nagao, Katsuki v Onoda, Ken | 6-3,5-7,6-4 |
| ITF Japan F1 | 2016/03/06 03:00 | Onoda, Ken v Tung-Lin Wu | 3-6,4-6 |
| ITF Japan F1 | 2016/03/05 03:00 | Onoda, Ken v Kousuke Ogura | 7-6,7-5 |
| Turkey F6, Singles Qualifying | 2016/02/11 16:45 | Onoda, Ken v Alexander Bublik | 1-6,6-7 |
| Turkey F6, Singles Qualifying | 2016/02/09 08:00 | Onoda, Ken v Desyatnik, Anton | 6-1,6-1 |
| ITF Turkey F4 | 2016/01/24 09:30 | Milan Drinic v Onoda, Ken | 6-4,0-6,6-4 |
| ITF China F12 Qual | 2015/08/02 07:30 | Onoda, Ken v Fan, Yishuo | 6-1,6-1 |