Ortiz, Roberto A
Current rating: 1433
Record: 3-7
| Grand Prix Mexico City 2015 (FRF limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 116 | Son Ibanez, Luis Ernesto (1537) | Lost 0-2 | -171447 |
| 4sealed | 141 | Evia Urban, Erick (1521) | Won 2-1 | +201467 |
| 5sealed | 80 | Machado, Gabriel (1581) | Lost 0-2 | -161451 |
| 6sealed | 107 | Lopez Perez, Olin Toatiuh (1467) | Lost 1-2 | -181433 |
| average opponent: 1526record: 1-3 | new rating: 1433 | |||
| Grand Prix Mexico City 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 259 | De Valdemar Romero, Erwin Alejandro (1518) | Lost 1-2 | -181482 |
| 2sealed | 233 | Hernandez Blanco, Ricardo Je (1482) | Won 2-0 | +181500 |
| 3sealed | 181 | Santaella Medina, Daniel (1482) | Lost 1-2 | -181482 |
| 4sealed | 244 | Perez, Mauricio Alberto (1482) | Won 2-1 | +181500 |
| 5sealed | 204 | Ruiz Pena, Rodrigo Alejandro (1500) | Lost 0-2 | -181482 |
| 6sealed | 246 | Montes, Carlos E (1482) | Lost 1-2 | -181464 |
| average opponent: 1491record: 2-4 | new rating: 1464 | |||