Head to Head
| Australian Open | 2022/11/18 06:00 | Koki Watanabe v Kodai Naraoka | L | 1-2 |
| Giraldilla Int. XD | 2018/12/22 20:00 | Koki Watanabe v Kodai Naraoka | W | 2-1 |
| Giraldilla Int. XD | 2018/04/06 03:00 | Koki Watanabe v Kodai Naraoka | L | 1-2 |
Home History
| Canada Open | 2024/07/04 20:20 | Kantaphon Wangcharoen v Koki Watanabe | W | 0-2 |
| Canada Open | 2024/07/03 23:15 | Ayush Shetty v Koki Watanabe | W | 0-2 |
| US Open | 2024/06/29 21:05 | Lanxi Lei v Koki Watanabe | L | 2-0 |
| US Open | 2024/06/28 23:35 | Uriel F C Artiga v Koki Watanabe | W | 0-2 |
| US Open | 2024/06/27 21:20 | Arnaud Merkle v Koki Watanabe | W | 0-2 |
| US Open | 2024/06/26 22:25 | Panitchaphon Teeraratsakul v Koki Watanabe | W | 0-2 |
| Malaysia Masters | 2024/05/22 03:45 | Viktor Axelsen v Koki Watanabe | L | 2-0 |
| Thailand Open | 2024/05/16 04:25 | Koki Watanabe v Guangzu Lu | L | 1-2 |
Away History
| Canada Open | 2024/07/04 21:15 | Jhuo-Fu Liao v Kodai Naraoka | W | 0-2 |
| Canada Open | 2024/07/04 01:40 | Koo Takahashi v Kodai Naraoka | W | 1-2 |
| Australian Open | 2024/06/16 07:00 | Zii Jia Lee v Kodai Naraoka | L | 2-1 |
| Australian Open | 2024/06/15 07:55 | Chun-Yi Lin v Kodai Naraoka | W | 0-2 |
| Australian Open | 2024/06/14 08:55 | H.S. Prannoy v Kodai Naraoka | W | 0-2 |
| Australian Open | 2024/06/13 07:35 | Kantaphon Wangcharoen v Kodai Naraoka | W | 0-2 |
| Australian Open | 2024/06/12 04:15 | Karono Karono v Kodai Naraoka | W | 0-2 |
| Indonesia Open | 2024/06/05 08:35 | Rasmus Gemke v Kodai Naraoka | L | 2-0 |