Hammerich, Jan
Current rating: 1459
| Grand Prix Bochum 2012 (RTR standard) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 582 | Pultz, Michal (1518) | Draw 1-1 | +11494 |
| 3standard | 656 | Hawa, Nour (1518) | Lost 0-1 | -181476 |
| 4standard | 778 | Kayed, Albert (1500) | Lost 1-2 | -171459 |
| top | average opponent: 1512record: 0-2-1 | new rating: 1459 | ||
| Grand Prix Lyon 2012 (modern) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 519 | Wild, Patrick (1542) | Lost 0-2 | -181501 |
| 3modern | 647 | Doco, Geoffrey (1784) | Won 2-0 | +231524 |
| 4modern | 678 | Lam, Wilson (1562) | Won 2-1 | +191543 |
| 5modern | 647 | Stihle, Julien (1654) | Lost 0-2 | -161527 |
| 6modern | 638 | Rodriguez, Aleix (1523) | Lost 1-2 | -181509 |
| 7modern | 691 | Kolp, Heiner (1644) | Lost 0-2 | -161493 |
| top | average opponent: 1618record: 2-4 | new rating: 1493 | ||
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 64 | Lailey, Mark (1436) | Won 2-0 | +171517 |
| 4legacy | 43 | Wild, Patrick (1562) | Lost 1-2 | -171500 |
| 5legacy | 131 | Hopper, Andrew (1460) | Lost 1-2 | -191481 |
| 6legacy | 216 | Fuchs, Johannes (1526) | Won 2-0 | +191500 |
| 7legacy | 185 | Paino, Lorenzo (1473) | Won 2-0 | +171517 |
| 8legacy | 92 | Kotter, Carsten (1564) | Lost 0-2 | -171500 |
| 9legacy | 140 | Passow, Christopher (1538) | Won 2-1 | +191519 |
| top | average opponent: 1508record: 4-3 | new rating: 1519 | ||