| Challenger Sao Paulo | 2022/03/30 21:20 | Fabio Mizutani v Manuel Freitas Chambel Paiva | L | 1-3 |
| Challenger Sao Paulo | 2022/03/27 01:40 | Fabio Mizutani v De Hong Jung | L | 2-3 |
| Challenger Sao Paulo | 2022/03/27 01:00 | Silnei Yuta v Fabio Mizutani | L | 3-1 |
| Challenger Sao Paulo | 2022/03/27 00:20 | Carlos Alberto Torres Ferraz v Fabio Mizutani | L | 3-1 |
| Challenger Sao Paulo | 2022/03/26 23:40 | Fabio Mizutani v Guilherme Mattos | W | 3-0 |
| Challenger Sao Paulo | 2022/03/26 23:20 | Everton Vianna v Fabio Mizutani | W | 0-3 |
| Challenger Sao Paulo | 2022/03/26 22:20 | Fabio Mizutani v Gustavo Jeremias Morais | L | 2-3 |
| Challenger Sao Paulo | 2022/03/26 21:20 | Fabio Mizutani v Milton Cardoso | L | 1-3 |
| Challenger Sao Paulo | 2022/03/30 21:40 | De Hong Jung v Hiromi Yokoyama | L | 3-0 |
| Challenger Sao Paulo | 2022/03/30 21:00 | Jefferson Silva v Hiromi Yokoyama | L | 3-1 |
| Boom Cup | 2020/06/13 21:00 | Lucas Orsatti v Hiromi Yokoyama | W | 2-3 |
| Boom Cup | 2020/06/13 20:10 | Hiromi Yokoyama v Mauricio Goncalves | W | 3-0 |
| Boom Cup | 2020/06/13 19:45 | Ricardo Kojima v Hiromi Yokoyama | L | 3-0 |
| Boom Cup | 2020/06/13 18:55 | Hiromi Yokoyama v Tiago Cardoso | L | 2-3 |
| Boom Cup | 2020/06/13 18:30 | Rodrigo Horiuchi v Hiromi Yokoyama | L | 3-0 |
| Boom Cup | 2020/06/11 21:00 | Hiromi Yokoyama v Lucas Orsatti | W | 3-0 |