Magalhaes, Joao
Current rating: 1557
Record: 9-6
| Grand Prix Rio de Janeiro 2013 (GTC standard) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 204 | Filho, Gilberto (1500) | Won 2-0 | +181523 |
| 2standard | 18 | Almeida, Alvaro (1518) | Won 2-1 | +181541 |
| 3standard | 35 | Parrado, Cristobal (1574) | Lost 0-2 | -181523 |
| 4standard | 142 | Queiroz Velozo, Diego (1518) | Won 2-0 | +181541 |
| 5standard | 96 | Moreira Egger, Felipe (1535) | Won 2-1 | +181559 |
| 6standard | 86 | Ferraresso, Daniel (1498) | Lost 1-2 | -191540 |
| 7standard | 101 | Silva, Fernando (1487) | Won 2-0 | +171557 |
| 8standard | 65 | Giantin Scacchetti, Gabriel (1555) | Lost 1-2 | -181539 |
| 9standard | 73 | Naganawa, Luciano (1538) | Won 2-0 | +181557 |
| average opponent: 1525record: 6-3 | new rating: 1557 | |||
| Grand Prix Sao Paulo 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 23 | Willian, Douglas (1592) | Won 2-1 | +201520 |
| 5sealed | 22 | Silva Frei, Gabriel (1521) | Won 2-0 | +181538 |
| 6sealed | 16 | Siqueira, Leonardo (1581) | Won 2-0 | +181556 |
| 7sealed | 9 | De lima, Luiz Henrique (1557) | Lost 0-2 | -181538 |
| 8sealed | 30 | Quintana, Guido (1619) | Lost 1-2 | -161522 |
| 9sealed | 43 | Heerdt Veiga, Bruno (1562) | Lost 0-2 | -171505 |
| average opponent: 1572record: 3-3 | new rating: 1505 | |||