Schomburg, Dan
Current rating: 1486
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 67 | Elliott, James (1500) | Lost 0-2 | -181506 |
| 2sealed | 431 | Hafer, Jared W (1538) | Won 2-0 | +181524 |
| 3sealed | 433 | Goff, Robert (1437) | Lost 1-2 | -191505 |
| 4sealed | 540 | Braymer, Wesley (1482) | Lost 0-2 | -191486 |
| top | average opponent: 1489record: 1-3 | new rating: 1486 | ||
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 6 | Ruprecht, Adam (1500) | Won 2-0 | +181539 |
| 2standard | 117 | McShane, Kevin F (1500) | Won 2-1 | +171556 |
| 3standard | 145 | Fox, Christopher (1502) | Lost 1-2 | -191537 |
| 4standard | 303 | Gray, Johnny (1519) | Won 2-0 | +181555 |
| 5standard | 157 | Choo, Yong Han (1950) | Lost 0-2 | -111544 |
| 6standard | 238 | Guth, Mark c (1502) | Lost 0-2 | -191525 |
| 7standard | 303 | Liebrecht, Brian A (1500) | Won 2-0 | +171542 |
| 8standard | 190 | Thomson, Ryan (1523) | Lost 1-2 | -181524 |
| top | average opponent: 1562record: 4-4 | new rating: 1524 | ||
| Grand Prix Seattle 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 7 | Stadnicki, Steven (1518) | Won 2-0 | +181518 |
| 3extended | 24 | Lawson, Kevin (1535) | Lost 0-2 | -171501 |
| 4extended | 105 | Ginn, Michael (1518) | Won 2-0 | +181519 |
| 5extended | 49 | Neary, Nicholas (1542) | Won 2-1 | +181537 |
| 6extended | 34 | Solberg, Derik (1556) | Won 2-0 | +191556 |
| 7extended | 30 | Alfares, Saoud (1510) | Lost 0-2 | -191537 |
| 8extended | 49 | Sinclair, Donald (1658) | Lost 0-2 | -161521 |
| top | average opponent: 1548record: 4-3 | new rating: 1521 | ||