Donatoni Ribeiro, Joao Vitor
Current rating: 1451
Record: 3-6-1
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 342 | Shigueru Hirayama, Henrique (1554) | Won 2-1 | +201484 |
| 2modern | 155 | Novoa, Guilherme (1465) | Won 2-0 | +181502 |
| 3modern | 175 | Angelo, Miguel (1580) | Lost 1-2 | -171485 |
| 4modern | 262 | Henrique De Freitas Crispim, Flavio (1519) | Lost 1-2 | -171468 |
| 5modern | 423 | Guarnieri, Antony (1502) | Draw 1-1 | 01468 |
| 6modern | 402 | Da Silva, Elton Carlo (1498) | Lost 1-2 | -171451 |
| average opponent: 1520record: 2-3-1 | new rating: 1451 | |||
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 86 | Micrute, Rafael (1500) | Lost 1-2 | -181482 |
| 2standard | 362 | Silva Almeida, Bruno Jose (1482) | Lost 1-2 | -181464 |
| 3standard | 548 | Antonio Klettenberg H, (1464) | Lost 0-2 | -181446 |
| 5standard | 522 | Luiz Cordeiro, Hudson (1464) | Won 2-0 | +181464 |
| average opponent: 1478record: 1-3 | new rating: 1464 | |||