Carvalho, Mateus
Current rating: 1448
Record: 3-6-1
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 276 | Kovacs, Bryan J (1652) | Lost 1-2 | -151447 |
| 2sealed | 325 | Richards, Michelle (1464) | Won 2-0 | +191466 |
| 3sealed | 268 | Frankel, Josh (1505) | Lost 0-2 | -181448 |
| 4sealed | 417 | Kitchpanich, Steven (1431) | Draw 1-1 | 01448 |
| average opponent: 1513record: 1-2-1 | new rating: 1448 | |||
| Grand Prix Oakland 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 129 | Morris, Mathew (1500) | Lost 1-2 | -181482 |
| 2extended | 220 | Ramos, Gilbert (1482) | Won 2-1 | +181500 |
| 3extended | 151 | Williamson, Michael (1436) | Lost 0-2 | -191481 |
| 4extended | 258 | Ringler, Philip (1483) | Lost 0-2 | -181463 |
| 5extended | 317 | Shapiro, Nathan (1465) | Won 2-0 | +181481 |
| 6extended | 257 | Meyer, Shawn (1430) | Lost 0-2 | -191462 |
| average opponent: 1466record: 2-4 | new rating: 1462 | |||