Rey C, Sebastian
Current rating: 1491
Record: 2-3
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Villacis, Ricardo (1500) | Lost 1-2 | -181482 |
| 3sealed | 57 | Smith, Oswell S (1540) | Won 2-1 | +191501 |
| 4sealed | 68 | Blume, Marco (1942) | Won 2-1 | +261527 |
| 5sealed | 34 | Arroyo, Julio (1516) | Lost 1-2 | -191508 |
| 6sealed | 76 | Williams, Benjamin (1514) | Lost 1-2 | -171491 |
| average opponent: 1602record: 2-3 | new rating: 1491 | |||