Sampaio, Joao Vitor
Current rating: 1535
Record: 4-2-3
| Grand Prix Rio de Janeiro 2013 (GTC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 253 | Barbosa, Cassio (1500) | Won 2-0 | +181518 |
| 2standard | 131 | Pereira Ferreira, Vinicius (1518) | Draw 1-1 | 01518 |
| 3standard | 96 | Amaral, Laerthe (1554) | Draw 1-1 | +11519 |
| 4standard | 202 | Lucas C., (1518) | Draw 1-1 | 01519 |
| 5standard | 240 | Marcilio, Giovanni (1500) | Won 2-0 | +171536 |
| 6standard | 184 | Bahiense, Ulisses P (1489) | Lost 0-2 | -191517 |
| 7standard | 173 | Araujo, Flavio (1556) | Won 2-0 | +191536 |
| 8standard | 117 | Vicencio, Renato (1518) | Won 2-0 | +181554 |
| 9standard | 88 | Ribeiro, Raphael (1534) | Lost 1-2 | -191535 |
| average opponent: 1521record: 4-2-3 | new rating: 1535 | |||