Carballo, Andres
Current rating: 1552
Record: 5-2
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 88 | Achcar, Omar (1535) | Lost 0-2 | -171483 |
| 3sealed | 154 | Quiros Castro, Jorge P (1482) | Won 2-0 | +181501 |
| 4sealed | 120 | De Arco, Carlos (1465) | Won 2-0 | +171518 |
| 5sealed | 92 | Potes, Julio (1482) | Lost 0-1 | -191499 |
| 6sealed | 122 | Torner, Esteban (1464) | Won 2-0 | +181517 |
| 7sealed | 103 | Venegas, Michael (1483) | Won 2-0 | +171534 |
| 8sealed | 71 | Chavez, Marco (1508) | Won 2-1 | +181552 |
| average opponent: 1489record: 5-2 | new rating: 1552 | |||