Estrada, Roberto
Current rating: 1410
Record: 3-9
| Grand Prix Mexico City 2012 (DKA limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Morales Gonzalez, Jose Juan (1500) | Lost 0-2 | -181462 |
| 2sealed | 195 | Santoyo, Hanzel (1483) | Lost 0-2 | -181444 |
| 3sealed | 302 | Magdaleno de la Torre, Carlo (1465) | Won 2-0 | +191463 |
| 4sealed | 276 | Barcelo, Cesar (1482) | Lost 0-2 | -181445 |
| 5sealed | 297 | Alcazar Juarez, Mauricio (1464) | Lost 0-2 | -181427 |
| 6sealed | 268 | Avendano, Enrique (1447) | Lost 0-2 | -171410 |
| 7sealed | 261 | Ruiz Alvarado, Alejandro (1428) | Won 2-1 | +181428 |
| 8sealed | 218 | Aleman Cruz, Jorge Octavio (1446) | Lost 0-2 | -181410 |
| average opponent: 1464record: 2-6 | new rating: 1410 | |||
| Grand Prix Dallas 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 32 | Fiorillo, John (1801) | Won 2-0 | +231523 |
| 5extended | 14 | Zambrano, Carlos (1682) | Lost 0-2 | -151508 |
| 6extended | 77 | Karsten, Frank (1895) | Lost 0-2 | -111497 |
| 7extended | 98 | Skipp, Barry J (1534) | Lost 1-2 | -171480 |
| average opponent: 1728record: 1-3 | new rating: 1480 | |||