Castangiera, Joao Peoro
Current rating: 1447
Record: 3-6
| Grand Prix Sao Paulo 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 34 | Almeida, Marcio (1544) | Lost 1-2 | -171483 |
| 2sealed | 244 | Barrozo, Andre (1481) | Lost 0-2 | -181465 |
| 3sealed | 327 | Didona, Jonata (1463) | Lost 0-2 | -181447 |
| 4sealed | 343 | Cardoso, Dilan B (1451) | Won 2-0 | +181465 |
| 5sealed | 294 | Saraiva, Eduardo (1453) | Lost 1-2 | -181447 |
| 6sealed | 261 | Alves, Rodrigo (1447) | Won 2-0 | +181465 |
| 7sealed | 217 | Herschel, Denis (1466) | Won 2-0 | +181483 |
| 8sealed | 160 | Jose Ferrerra, Diego (1483) | Lost 0-2 | -181465 |
| 9sealed | 142 | Brocco, Carlos Alberto (1464) | Lost 0-2 | -181447 |
| average opponent: 1473record: 3-6 | new rating: 1447 | |||