Niemeyer, Gero
Current rating: 1571
| Grand Prix London 2019 (WAR sealed) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| D1sealed | 1109 | Bures, Marek (1503) | Won 2-0 | +161646 |
| D2sealed | 1083 | Orange, Gregory (1923) | Lost 1-2 | -131633 |
| D3sealed | 1201 | Majid, Abdul (1491) | Lost 0-2 | -211612 |
| D4sealed | 1180 | Spurling, Josh (1470) | Lost 0-2 | -211591 |
| D5sealed | 1151 | Bakker, Mark (1475) | Lost 0-2 | -201571 |
| top | average opponent: 1572record: 1-4 | new rating: 1571 | ||
| Grand Prix London 2013 (GTC limited) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 620 | Valkeneers, Koen (1427) | Won 2-0 | +161576 |
| 2sealed | 101 | Munk, Thomas (1462) | Won 2-1 | +151591 |
| 3sealed | 158 | Karc, Robert (1589) | Draw 1-1 | 01591 |
| 4sealed | 259 | Retourne, Amelien (1498) | Won 2-1 | +171608 |
| 5sealed | 132 | Canavesi, Daniele (1933) | Won 2-1 | +231631 |
| 6sealed | 65 | Plagge, Julian (1674) | Won 2-1 | +191650 |
| 7sealed | 33 | Lorenc, Michal (1638) | Won 2-1 | +181668 |
| 8sealed | 17 | Gilligan, Daniel (1661) | Lost 1-2 | -181650 |
| 9sealed | 61 | Langley, Mark (1544) | Lost 0-2 | -201630 |
| top | average opponent: 1603record: 6-2-1 | new rating: 1630 | ||
| Grand Prix Bochum 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 701 | Trofin, Alexandru (1500) | Won 2-0 | +181518 |
| 2sealed | 522 | Zemp, Dominic (1579) | Won 2-0 | +191537 |
| 3sealed | 551 | Molle, Niels (1594) | Lost 1-2 | -171520 |
| 4sealed | 680 | Delis, Achilles (1532) | Lost 1-2 | -181502 |
| 5sealed | 748 | Schouren, Oliver (1500) | Won 2-0 | +181520 |
| 6sealed | 717 | De Haan, Floris Rutger (1693) | Won 2-0 | +211541 |
| 7sealed | 605 | Speckmann, Marcel (1570) | Won 2-1 | +191560 |
| top | average opponent: 1567record: 5-2 | new rating: 1560 | ||