| Challenger Sao Paulo | 2022/04/09 21:00 | Heins Bendezu v De Hong Jung | L | 0-3 |
| Challenger Sao Paulo | 2022/04/09 21:00 | Alejandro Fernandez Junior v Guilherme Mattos | L | 3-1 |
| Challenger Sao Paulo | 2022/04/08 02:20 | Guilherme Mattos v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/04/08 01:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-1 |
| Challenger Sao Paulo | 2022/04/08 00:40 | Guilherme Mattos v Hiromi Yokoyama | W | 3-0 |
| Challenger Sao Paulo | 2022/04/08 00:00 | Guilherme Mattos v Fabio Mizutani | W | 3-1 |
| Challenger Sao Paulo | 2022/04/07 23:20 | Rogerio Capobianco v Guilherme Mattos | W | 1-3 |
| Challenger Sao Paulo | 2022/04/07 22:40 | Guilherme Mattos v Leandro Nogueira Carvalho | W | 3-2 |
| Challenger Sao Paulo | 2022/04/07 22:00 | Guilherme Mattos v Vitor Carlesse Martins | W | 3-0 |