Knebel, David
Current rating: 1450
Record: 2-5
| Grand Prix Portland 2013 (modern) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 99 | Kellams, Jackson (1500) | Lost 1-2 | -171448 |
| 2modern | 99 | Buteau, Jacques (1482) | Won 2-1 | +191467 |
| 3modern | 99 | Daruszka, Rael (1501) | Won 2-1 | +181485 |
| 4modern | 99 | Elbert, Troy (1486) | Lost 1-2 | -181467 |
| 5modern | 99 | Innocenti, Dayson (1483) | Lost 1-2 | -171450 |
| average opponent: 1490record: 2-3 | new rating: 1450 | |||
| Grand Prix Dallas 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 163 | Berghorn, Bryan (1559) | Lost 0-2 | -171483 |
| 3extended | 206 | Salvador, Anthony (1500) | Lost 0-0 | -181465 |
| average opponent: 1530record: 0-2 | new rating: 1465 | |||