Fonken, David
Current rating: 1408
Record: 7-13
| Grand Prix Denver 2019 (M20 standard) | starting rating: 1397 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 162 | Baugher, Carson (1500) | Won 2-0 | +201417 |
| 2standard | 126 | Marley, Carl (1464) | Lost 1-2 | -171400 |
| 3standard | 197 | Keller, Koby (1676) | Lost 0-2 | -131387 |
| 4standard | 228 | Allen, Zach (Andrew) (1481) | Won 2-1 | +201407 |
| 5standard | 205 | Whittaker, Douglas (1451) | Won 2-0 | +191426 |
| 6standard | 165 | Coonan, Ryan (1430) | Lost 0-2 | -181408 |
| top | average opponent: 1500record: 3-3 | new rating: 1408 | ||
| Grand Prix Denver 2015 (KTK standard) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 359 | Ellison, William (1500) | Won 2-0 | +201448 |
| 2standard | 212 | Christi, Ryan (1517) | Lost 1-2 | -171431 |
| 3standard | 427 | Walker, Nathaniel (1500) | Lost 1-2 | -171414 |
| 4standard | 546 | Wade, Joshua (1476) | Lost 0-2 | -171397 |
| top | average opponent: 1498record: 1-3 | new rating: 1397 | ||
| Grand Prix Denver 2008 (Lorwyn block) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 118 | Romero, Julian (1500) | Lost 1-2 | -171464 |
| 2block | 200 | Heath, Joel (1444) | Won 2-0 | +171481 |
| 3block | 160 | Colwell, Daniel (1500) | Lost 1-2 | -171464 |
| 4block | 209 | ladd, danny (1482) | Lost 1-2 | -181446 |
| 5block | 264 | Trujillo, Mathew (1463) | Lost 0-2 | -181428 |
| top | average opponent: 1478record: 1-4 | new rating: 1428 | ||
| Grand Prix Denver 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 74 | Davis, Scott (1500) | Lost 1-2 | -181482 |
| 2block | 101 | Fenwick, Brian (1518) | Won 2-1 | +191501 |
| 3block | 76 | Williams, Obie (1500) | Won 2-0 | +181519 |
| 4block | 60 | Bau, Philip (1453) | Lost 0-2 | -201499 |
| 5block | 137 | Wolfe, Bryan (1500) | Lost 0-2 | -181481 |
| top | average opponent: 1494record: 2-3 | new rating: 1481 | ||