| Giraldilla Int. XD | 2018/02/21 14:10 | Rajiv Ouseph v Abhishek Yeligar | W | 2-0 |
| Indonesia Masters - Mixdouble | 2018/02/18 13:00 | Anders Antonsen v Rajiv Ouseph | L | 2-1 |
| Indonesia Masters - Mixdouble | 2018/02/17 11:00 | Brice Leverdez v Rajiv Ouseph | W | 1-2 |
| Indonesia Masters - Mixdouble | 2018/01/31 04:10 | Sai Praneeth B. v Rajiv Ouseph | L | 2-1 |
| Indonesia Masters | 2018/01/24 05:40 | Rajiv Ouseph v Hyeok Jin Jeon | L | 0-2 |
| All England Open | 2017/11/15 11:45 | Rajiv Ouseph v Yuqi Shi | L | 1-2 |
| Indonesia Masters - Mixdouble | 2017/11/02 17:35 | Mark Caljouw v Rajiv Ouseph | L | 2-1 |
| Indonesia Masters - Mixdouble | 2017/11/01 19:35 | Simon Wang v Rajiv Ouseph | W | 1-2 |
| Giraldilla Int. XD | 2018/02/21 14:40 | Lucas Claerbout v Koki Watanabe | W | 1-2 |
| Macau Open | 2017/11/09 07:15 | Wei Feng Chong v Koki Watanabe | L | 2-0 |
| Macau Open | 2017/11/08 04:35 | Daren Liew v Koki Watanabe | W | 0-2 |
| Macau Open | 2017/11/07 11:00 | Koki Watanabe v Chun Chung Hung | W | 2-0 |
| Giraldilla Int. XD | 2017/09/19 08:00 | Koki Watanabe v Khosit Phetpradab | L | 0-2 |
| Giraldilla Int. XD | 2017/09/19 02:00 | Koki Watanabe v Takuma Ueda | W | 2-1 |
| Indonesia Masters - Mixdouble | 2017/07/22 01:30 | Koki Watanabe v Kwang Hee Heo | L | 1-2 |
| Indonesia Masters - Mixdouble | 2017/07/21 02:45 | Kieran Merrilees v Koki Watanabe | W | 0-2 |