Pedra Vidal, Sonia
Current rating: 1450
Record: 1-4
| Grand Prix Barcelona 2011 (MBS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 151 | Rodriguez, Lazaro (1500) | Won 2-1 | +181518 |
| 2standard | 123 | Giaccone, Nicolas (1518) | Lost 0-2 | -181500 |
| 3standard | 206 | Wilks, John-Joseph (1506) | Lost 0-2 | -181482 |
| 4standard | 232 | Clark, Nicholas (1710) | Lost 0-2 | -141468 |
| 5standard | 246 | Sternberg, Henrik (1468) | Lost 0-2 | -181450 |
| average opponent: 1540record: 1-4 | new rating: 1450 | |||