| Boom Cup | 2020/05/30 21:00 | Ricardo Kojima v Akira Chikaraishi | L | 3-2 |
| Boom Cup | 2020/05/28 23:30 | Ricardo Kojima v Akira Chikaraishi | L | 3-1 |
| Boom Cup | 2020/05/26 21:50 | Ricardo Kojima v Akira Chikaraishi | L | 3-0 |
| Boom Cup | 2020/05/23 20:10 | Ricardo Kojima v Akira Chikaraishi | L | 3-0 |
| Boom Cup | 2020/05/22 18:30 | Ricardo Kojima v Akira Chikaraishi | L | 3-2 |
| Boom Cup | 2020/05/19 21:00 | Ricardo Kojima v Akira Chikaraishi | L | 3-1 |
| Boom Cup | 2020/05/15 19:00 | Akira Chikaraishi v Ricardo Kojima | L | 1-3 |
| Boom Cup | 2020/05/12 19:30 | Ricardo Kojima v Akira Chikaraishi | L | 3-2 |
| Boom Cup | 2020/06/04 19:45 | Hiromi Yokoyama v Akira Chikaraishi | W | 0-3 |
| Boom Cup | 2020/06/04 18:55 | Akira Chikaraishi v Danilo Umehara | W | 3-0 |
| Boom Cup | 2020/06/04 18:30 | Lucas Orsatti v Akira Chikaraishi | W | 0-3 |
| Boom Cup | 2020/06/03 00:20 | Akira Chikaraishi v Lucas Orsatti | W | 3-0 |
| Boom Cup | 2020/06/02 23:30 | Alexandre Matsuo v Akira Chikaraishi | W | 0-3 |
| Boom Cup | 2020/06/02 23:05 | Akira Chikaraishi v Rodrigo Horiuchi | W | 3-0 |
| Boom Cup | 2020/06/02 22:40 | Akira Chikaraishi v Vitor Yamamoto | W | 3-0 |
| Boom Cup | 2020/06/02 21:50 | Hiromi Yokoyama v Akira Chikaraishi | W | 0-3 |
| Boom Cup | 2020/06/04 19:45 | Ricardo Kojima v Jonathan Dias | W | 3-1 |
| Boom Cup | 2020/06/04 19:20 | Ricardo Kojima v Lucas Orsatti | W | 3-1 |
| Boom Cup | 2020/06/04 18:55 | Hiromi Yokoyama v Ricardo Kojima | W | 0-3 |
| Boom Cup | 2020/06/04 00:20 | Ricardo Kojima v Lucas Kawahara | W | 3-0 |
| Boom Cup | 2020/06/03 23:55 | Danilo Umehara v Ricardo Kojima | W | 0-3 |
| Boom Cup | 2020/06/03 22:40 | Ricardo Kojima v Rodrigo Horiuchi | W | 3-0 |
| Boom Cup | 2020/06/03 22:15 | Rafael Franco v Ricardo Kojima | W | 0-3 |
| Boom Cup | 2020/06/03 21:50 | Ricardo Kojima v Jonathan Dias | W | 3-2 |