Barreto, Arnaldo
Current rating: 1482
Record: 2-3
| Grand Prix Rio de Janeiro 2013 (GTC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 103 | Karim Bueno, Alexandre (1506) | Lost 0-2 | -181482 |
| 2standard | 202 | Sanchez, Francisco [URY] (1482) | Won 2-0 | +181500 |
| 3standard | 114 | Faria, Pedro (1499) | Won 2-1 | +181518 |
| 4standard | 118 | Cordeiro, Wellington (1518) | Lost 1-2 | -181500 |
| 5standard | 242 | Pedrosa, Pedro (1501) | Lost 1-2 | -181482 |
| average opponent: 1501record: 2-3 | new rating: 1482 | |||