Matheus Santos E Souza, Guilherme
Current rating: 1451
Record: 3-6
| Grand Prix Sao Paulo 2017 (modern) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 208 | De Melo, Eduardo (1500) | Lost 1-2 | -171429 |
| 2modern | 434 | Vida, Wilson Ademar (1446) | Won 2-1 | +181447 |
| 3modern | 328 | Acuna, Hector (1499) | Won 2-1 | +191466 |
| 4modern | 259 | Henrique Paniago De O Amaral, Pedro (1516) | Lost 0-2 | -171449 |
| 5modern | 386 | Ferrari, Bruno (1505) | Won 2-1 | +191468 |
| 6modern | 286 | Vieira De Araujo, Flavio (1523) | Lost 1-2 | -171451 |
| average opponent: 1498record: 3-3 | new rating: 1451 | |||
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 182 | Brayner, Thiago A (1500) | Lost 0-2 | -181482 |
| 2standard | 495 | de Castro Vaz, Bruno (1487) | Lost 0-2 | -181464 |
| 3standard | 618 | Lopes Iglesias, Ricardo Augusto (1465) | Lost 1-2 | -181446 |
| average opponent: 1484record: 0-3 | new rating: 1446 | |||