Rehfeldt, Stefan
Current rating: 1388
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 55 | Kreis, Benjamin (1500) | Lost 0-2 | -161400 |
| 2sealed | 324 | Wachsmann, Alexander (1482) | Won 2-1 | +191419 |
| 3sealed | 189 | Tang, Johann (1499) | Lost 0-2 | -161403 |
| 4sealed | 343 | Katte, Matthias (1561) | Lost 0-2 | -151388 |
| top | average opponent: 1511record: 1-3 | new rating: 1388 | ||
| Grand Prix Paris 2009 (ZEN limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 761 | Debordes, Mathieu (1629) | Lost 0-2 | -151449 |
| 2sealed | 1001 | Janak, Tomas (1604) | Lost 0-2 | -151434 |
| 3sealed | 1012 | Fouques, Julien (1463) | Lost 0-2 | -181416 |
| top | average opponent: 1565record: 0-3 | new rating: 1416 | ||
| Grand Prix Hanover 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 502 | Bombonatti, Irio (1500) | Lost 0-1 | -181482 |
| 2extended | 563 | Goepfert, Kara (1480) | Won 2-0 | +181500 |
| 3extended | 551 | Klein, Dieter (1499) | Lost 0-2 | -181482 |
| 4extended | 560 | Doring, Jorn (1480) | Draw 1-1 | 01482 |
| 5extended | 579 | Karcher, David S (1481) | Lost 0-2 | -181464 |
| 6extended | 578 | Schwelm, Enrico (1465) | Lost 0-2 | -181446 |
| 7extended | 562 | Steigerwald, Jorn (1445) | Won 2-0 | +181464 |
| top | average opponent: 1479record: 2-4-1 | new rating: 1464 | ||