Prohaska, Sonja
Current rating: 1362
Record: 2-10-2
| Grand Prix Prague 2013 (M14 limited) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 242 | Steybe, Felix (1360) | Won 2-1 | +161447 |
| 2sealed | 97 | Findejs, Jan (1564) | Lost 1-2 | -161431 |
| 3sealed | 472 | Huber, David (1375) | Lost 0-2 | -191412 |
| 4sealed | 566 | Bertin, Oscar (1448) | Lost 0-2 | -171395 |
| 5sealed | 645 | Eicher, Christopher (1463) | Lost 0-2 | -171378 |
| 6sealed | 603 | Praig, Christoph (1468) | Lost 0-2 | -161362 |
| average opponent: 1446record: 1-5 | new rating: 1362 | |||
| Grand Prix Madrid 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 147 | Puelles Parcet, Jose M (1500) | Lost 1-2 | -181482 |
| 2sealed | 178 | Baert, Jiri (1662) | Lost 1-2 | -151467 |
| 3sealed | 255 | Gomez Felices, Pablo (1464) | Draw 1-1 | 01467 |
| 4sealed | 304 | Silva, Nuno (1496) | Lost 0-2 | -171450 |
| 5sealed | 294 | Lozano, Victor (1429) | Won 2-0 | +171467 |
| 6sealed | 261 | Bogdanov, Vitaliy G (1469) | Lost 0-2 | -181449 |
| 7sealed | 231 | Garcia Gonzalez, Jose (1411) | Draw 1-1 | 01449 |
| 8sealed | 201 | Thomas Perez Del Posti, (1447) | Lost 0-2 | -181431 |
| average opponent: 1485record: 1-5-2 | new rating: 1431 | |||