Haefner, Bob
Current rating: 1504
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1441 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 307 | Gibbs, Tom (1678) | Lost 0-2 | -131428 |
| 2sealed | 454 | LEUNG, STEPHEN (1482) | Won 2-1 | +191447 |
| 3sealed | 477 | Zientara, Taylor (1500) | Won 2-0 | +191466 |
| 4sealed | 263 | Webber, Charles (1446) | Won 2-1 | +171483 |
| 5sealed | 240 | Sundholm, Peter (1498) | Lost 0-2 | -181465 |
| 6sealed | 385 | Chatfield, Lawrence (1579) | Won 2-1 | +211486 |
| 7sealed | 322 | Davis, Tyler (1428) | Won 2-0 | +161502 |
| 8sealed | 204 | Raval, Mahendra (1517) | Won 2-1 | +191521 |
| 9sealed | 153 | Stewart, Phillip (1591) | Lost 1-2 | -171504 |
| top | average opponent: 1524record: 6-3 | new rating: 1504 | ||
| Grand Prix Kansas City 2011 (NPH limited) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 144 | Reindl, Colin (1607) | Lost 1-2 | -161475 |
| 3sealed | 289 | Cioffi, Alex (1499) | Lost 0-2 | -181457 |
| 4sealed | 322 | Johnston, Adam (1562) | Lost 1-2 | -161441 |
| top | average opponent: 1556record: 0-3 | new rating: 1441 | ||
| Grand Prix Kansas City 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 90 | Patton, John (1551) | Won 2-0 | +191519 |
| 4sealed | 1 | Melnikow, Alex (1612) | Lost 0-2 | -161503 |
| 5sealed | 87 | Gast, Cal (1534) | Won 2-1 | +181521 |
| 6sealed | 44 | Weil, Noah (1811) | Lost 0-2 | -131508 |
| 7sealed | 80 | Hall, James (1539) | Lost 0-2 | -171491 |
| top | average opponent: 1609record: 2-3 | new rating: 1491 | ||