Retana, Alejandro
Current rating: 1485
Record: 3-4
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 22 | Mainieri, Julian (1500) | Won 2-1 | +181518 |
| 3sealed | 107 | Robins, Jules (1576) | Lost 0-2 | -171501 |
| 4sealed | 112 | Escalona, Miguel (1607) | Lost 0-2 | -161485 |
| 5sealed | 150 | Obande, Tonny (1482) | Lost 0-2 | -181467 |
| 6sealed | 138 | Salazar, Ivan Andres (1447) | Lost 1-2 | -181449 |
| 7sealed | 128 | Murillo, Andres (1446) | Won 2-0 | +181467 |
| 8sealed | 109 | Molina B, Jose (1464) | Won 2-0 | +181485 |
| average opponent: 1503record: 3-4 | new rating: 1485 | |||