Kopf, Joe W
Current rating: 1558
Record: 10-7
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 418 | Tummons, Matt R (1500) | Lost 1-2 | -181483 |
| 2sealed | 629 | Davis, Keith (1482) | Lost 1-2 | -181465 |
| 3sealed | 708 | Adams, Josh (1499) | Won 2-0 | +191484 |
| 4sealed | 683 | Johnson, Jason C (1482) | Won 2-0 | +171501 |
| 5sealed | 642 | Neeley, Sheldon (1500) | Won 2-0 | +181519 |
| 6sealed | 597 | Herrera, Alfredo (1525) | Won 2-1 | +191538 |
| 7sealed | 493 | Harkins, Jesse (1547) | Won 2-1 | +181556 |
| 8sealed | 443 | Stevens, John (1544) | Won 2-1 | +181574 |
| 9sealed | 434 | Duke, Ian (1687) | Lost 1-2 | -161558 |
| average opponent: 1529record: 6-3 | new rating: 1558 | |||
| Grand Prix St. Louis 2006 (CSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 20 | Weber, Ryan (1500) | Won 2-1 | +181518 |
| 2sealed | 24 | Baldridge, William (1500) | Won 2-1 | +181536 |
| 3sealed | 6 | Patti, Ryan (1536) | Won 2-0 | +181554 |
| 4sealed | 3 | Lemahieu, Jason (1553) | Won 2-0 | +181572 |
| 5sealed | 23 | Ioli, Mark (1772) | Lost 1-2 | -151557 |
| 6sealed | 54 | Underwood, Andrew (1537) | Lost 1-2 | -181539 |
| 7sealed | 70 | Danner, Matthew (1483) | Lost 0-2 | -191520 |
| 8sealed | 66 | Gholson, Robert (1466) | Lost 0-2 | -191501 |
| average opponent: 1544record: 4-4 | new rating: 1501 | |||