Ahrens, Olaf
Current rating: 1394
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 775 | Poursaleh, Ramin (1472) | Draw 1-1 | 01462 |
| 2sealed | 733 | Pestov, Evgeny (1519) | Lost 0-2 | -171445 |
| 3sealed | 815 | Strzelczyk, Adam (1464) | Lost 1-2 | -171428 |
| 4sealed | 864 | Rahfoth, Joachim (1463) | Lost 0-2 | -181410 |
| 5sealed | 825 | Dons, Michael (1446) | Lost 1-2 | -171393 |
| 6sealed | 770 | Veselsky, Karel (1445) | Draw 1-1 | +11394 |
| top | average opponent: 1468record: 0-4-2 | new rating: 1394 | ||
| Grand Prix Hanover 2009 (extended) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 59 | Steinbach, Sven (1500) | Lost 0-2 | -181461 |
| 2extended | 158 | Von Muller, Moritz (1485) | Lost 1-2 | -171444 |
| 3extended | 187 | Bettelhauser, Eike (1466) | Won 2-0 | +181462 |
| 4extended | 193 | Kurhofer, Stefan (1464) | Won 0-0 | +181480 |
| 5extended | 152 | Gerecke, Piet (1487) | Lost 1-2 | -181462 |
| top | average opponent: 1480record: 2-3 | new rating: 1462 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 51 | Ruehling, Marcel (1500) | Won 2-0 | +181518 |
| 2sealed | 89 | Boltromiuk, Maciej (1500) | Lost 0-2 | -181500 |
| 3sealed | 202 | Weber, Thomas (1296) | Won 2-1 | +141514 |
| 4sealed | 190 | Fischer-Gundlach, Moritz (1549) | Lost 0-2 | -171497 |
| 5sealed | 237 | Bluher, David (1498) | Lost 1-2 | -181479 |
| 6sealed | 211 | Steidinger, Stephan (1484) | Draw 1-1 | 01479 |
| top | average opponent: 1471record: 2-3-1 | new rating: 1479 | ||