Rivera, Jorge S
Current rating: 1519
Record: 4-3
| Grand Prix Costa Rica 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 107 | Jimenez Ruiz, Luis David (1500) | Won 2-0 | +181518 |
| 3sealed | 18 | Estrada Morales, Mauricio (1451) | Lost 0-2 | -191499 |
| 4sealed | 91 | Antunes, Robert (1508) | Lost 0-2 | -181481 |
| 5sealed | 95 | Salas, Julian (1519) | Lost 0-2 | -171464 |
| 6sealed | 118 | Cascante Marin, Paolo (1499) | Won 2-1 | +181482 |
| 7sealed | 93 | Villacis, Ricardo (1481) | Won 2-0 | +181500 |
| 8sealed | 70 | Fallas, Cesar (1534) | Won 2-0 | +191519 |
| average opponent: 1499record: 4-3 | new rating: 1519 | |||