Koewler, Andrew
Current rating: 1483
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 176 | Dauphin, Ian M (1500) | Won 2-0 | +181500 |
| 2sealed | 30 | Koch, Franz (1518) | Won 2-1 | +181518 |
| 3sealed | 7 | Gerstl, Jeff (1510) | Won 2-1 | +181536 |
| 4sealed | 22 | Boehm, Greg (1576) | Lost 1-2 | -171519 |
| 5sealed | 84 | Kelly, Chris S (1519) | Lost 0-2 | -181501 |
| 6sealed | 89 | Kestenberg, Lee (1508) | Lost 0-2 | -181483 |
| top | average opponent: 1522record: 3-3 | new rating: 1483 | ||
| Grand Prix Minneapolis 2001 (Invasion block) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 113 | Hutt, George (1500) | Won 2-0 | +181499 |
| 2block | 21 | Andrews, Steve (1518) | Won 2-0 | +191518 |
| 3block | 10 | Randall, Richard (1536) | Lost 0-2 | -181500 |
| 4block | 73 | Romme, Carson (1467) | Won 2-1 | +171517 |
| 5block | 72 | Lagges, John (1519) | Lost 0-2 | -181499 |
| 6block | 62 | Hoover, Tim (1520) | Lost 0-2 | -171482 |
| top | average opponent: 1510record: 3-3 | new rating: 1482 | ||
| Grand Prix Detroit 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 14 | Ngo, Kiet (1500) | Won 2-0 | +181518 |
| 2sealed | 148 | Smith, Brian (1517) | Won 2-1 | +181536 |
| 3sealed | 20 | Cook, Ben (1535) | Lost 0-2 | -181518 |
| 4sealed | 124 | Allbright, Bob (1455) | Lost 0-2 | -191499 |
| 5sealed | 173 | Lee, Albert (1499) | Lost 0-2 | -181481 |
| top | average opponent: 1501record: 2-3 | new rating: 1481 | ||