Herdzina, Joanna
Current rating: 1499
Record: 4-4
| Grand Prix Bochum 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 5 | Descamps, Benjamin (1447) | Lost 1-2 | -191481 |
| 2standard | 258 | Balan, Daniel (1465) | Won 2-0 | +181499 |
| 3standard | 161 | Been, Iso (1599) | Won 2-0 | +201519 |
| 4standard | 248 | Dziuba, Adrian (1417) | Lost 0-2 | -201499 |
| 5standard | 301 | Diekjobst, Lukas (1597) | Lost 0-2 | -171482 |
| 6standard | 271 | Fuhr, Patrick (1486) | Won 2-1 | +191501 |
| 7standard | 228 | Schulz, Michael (1403) | Won 2-0 | +161517 |
| 8standard | 132 | Schantz, Kevin (1531) | Lost 1-2 | -181499 |
| average opponent: 1493record: 4-4 | new rating: 1499 | |||