Mateus, Joao
Current rating: 1537
Record: 5-3
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 237 | Almela Torres, Amadeo (1445) | Lost 0-2 | -191481 |
| 2pioneer | 483 | Schafroth, Thomas (1408) | Won 2-0 | +171498 |
| 3pioneer | 564 | Ylenius, Henri (1568) | Won 2-1 | +191517 |
| 4pioneer | 520 | Gracia, Pere (1662) | Lost 1-2 | -151502 |
| 5pioneer | 646 | Hill, Richard (1493) | Won 2-1 | +171519 |
| 6pioneer | 333 | Garcia Ballesteros, Mariluz (1522) | Lost 1-2 | -181501 |
| 7pioneer | 423 | Catalano, Dario (1491) | Won 2-1 | +181519 |
| 8pioneer | 294 | Mondini, Davide (1528) | Won 2-0 | +181537 |
| average opponent: 1514record: 5-3 | new rating: 1537 | |||