| Boom Cup | 2020/05/15 19:00 | Akira Chikaraishi v Ricardo Kojima | W | 1-3 |
| Boom Cup | 2020/05/12 19:30 | Ricardo Kojima v Akira Chikaraishi | W | 3-2 |
| Boom Cup | 2020/05/05 13:00 | Akira Chikaraishi v Ricardo Kojima | W | 2-3 |
| Boom Cup | 2020/05/03 20:00 | Ricardo Kojima v Akira Chikaraishi | L | 1-3 |
| Boom Cup | 2020/05/02 15:00 | Akira Chikaraishi v Ricardo Kojima | L | 3-1 |
| Boom Cup | 2020/04/30 13:30 | Ricardo Kojima v Akira Chikaraishi | W | 3-2 |
| Boom Cup | 2020/04/22 16:00 | Akira Chikaraishi v Ricardo Kojima | W | 2-3 |
| Boom Cup | 2020/04/21 16:30 | Akira Chikaraishi v Ricardo Kojima | W | 0-3 |
| Boom Cup | 2020/05/19 20:35 | Vitor Yamamoto v Ricardo Kojima | W | 0-3 |
| Boom Cup | 2020/05/19 19:45 | Rafael Franco v Ricardo Kojima | W | 0-3 |
| Boom Cup | 2020/05/19 19:20 | Ricardo Kojima v Lucas Kawahara | W | 3-0 |
| Boom Cup | 2020/05/19 18:30 | Tiago Fudimori v Ricardo Kojima | W | 0-3 |
| Boom Cup | 2020/05/19 00:20 | Ricardo Kojima v Vitor Yamamoto | W | 3-1 |
| Boom Cup | 2020/05/18 23:30 | Leandro Pereira v Ricardo Kojima | W | 0-3 |
| Boom Cup | 2020/05/18 23:05 | Ricardo Kojima v Alexandre Matsuo | W | 3-0 |
| Boom Cup | 2020/05/18 22:40 | Ricardo Kojima v Jonathan Dias | W | 3-1 |
| Boom Cup | 2020/05/19 20:10 | Akira Chikaraishi v Rafael Franco | W | 3-0 |
| Boom Cup | 2020/05/19 19:45 | Lucas Kawahara v Akira Chikaraishi | W | 0-3 |
| Boom Cup | 2020/05/19 18:55 | Akira Chikaraishi v Tiago Fudimori | W | 3-1 |
| Boom Cup | 2020/05/19 18:30 | Vitor Yamamoto v Akira Chikaraishi | W | 0-3 |
| Boom Cup | 2020/05/18 21:00 | Danilo Umehara v Akira Chikaraishi | W | 0-3 |
| Boom Cup | 2020/05/18 20:10 | Akira Chikaraishi v Ito Henrique | W | 3-0 |
| Boom Cup | 2020/05/18 19:45 | Rafael Franco v Akira Chikaraishi | W | 0-3 |
| Boom Cup | 2020/05/18 18:55 | Akira Chikaraishi v Lucas Kawahara | W | 3-0 |