Chavez, Marco
Current rating: 1491
Record: 3-4
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 104 | Paulus, Jennifer (1500) | Lost 1-2 | -181482 |
| 3sealed | 55 | Delgado, Karen (1518) | Won 2-1 | +191501 |
| 4sealed | 99 | Gutierrez Rodas, Braulio (1535) | Won 2-1 | +181519 |
| 5sealed | 38 | Ching, Daniel (1553) | Lost 1-2 | -171502 |
| 6sealed | 66 | Black, Samuel (1865) | Won 2-1 | +241526 |
| 7sealed | 49 | Gonzalez, Emanuel (1524) | Lost 0-2 | -181508 |
| 8sealed | 71 | Carballo, Andres (1534) | Lost 1-2 | -171491 |
| average opponent: 1576record: 3-4 | new rating: 1491 | |||