Walker, Derek
Current rating: 1458
| Grand Prix Detroit 2016 (modern) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 624 | Muto, Teruhiko (1500) | Lost 0-2 | -181471 |
| 2modern | 928 | Hodges, Jerry (1478) | Won 2-0 | +181489 |
| 3modern | 878 | Spiegelberg, Christian (1500) | Lost 1-2 | -171472 |
| 4modern | 1121 | Zawisa, Kevin (1507) | Won 2-0 | +181490 |
| 5modern | 609 | Roman, Filip (1719) | Lost 0-2 | -141476 |
| 6modern | 975 | Mars, Nathan (1482) | Lost 1-2 | -181458 |
| top | average opponent: 1531record: 2-4 | new rating: 1458 | ||
| Grand Prix Chicago 2014 (JOU standard) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 614 | Bauer, Josh (1479) | Won 2-1 | +171534 |
| 4standard | 526 | Sigrist, Mike (1900) | Lost 1-2 | -111523 |
| 5standard | 679 | Balk, Nathaniel (1536) | Lost 0-2 | -181505 |
| 6standard | 630 | Ayotte, Blaine (1517) | Lost 0-2 | -181487 |
| 7standard | 744 | Antoszewski, Chris (1452) | Won 2-0 | +181505 |
| 8standard | 639 | Martin, Clyde (1648) | Lost 1-2 | -161489 |
| top | average opponent: 1589record: 2-4 | new rating: 1489 | ||
| Grand Prix Cincinnati 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 154 | Glenn, Jason (1500) | Lost 0-2 | -181482 |
| 2standard | 450 | Reinhardt, Logan (1483) | Lost 0-2 | -181464 |
| 3standard | 814 | Staley, Derek (1463) | Won 2-1 | +181482 |
| 4standard | 597 | Rounsley, Jeremy (1483) | Won 2-1 | +181500 |
| 5standard | 400 | McDaniel, Kyle (1496) | Lost 1-2 | -181482 |
| 6standard | 579 | Handlon, Randall (1480) | Won 2-0 | +181500 |
| 7standard | 401 | Reed, Don (1452) | Lost 0-2 | -191481 |
| 8standard | 377 | Kenjar, Jason (1470) | Won 2-1 | +181499 |
| 9standard | 268 | Rubenstein, Allan (1507) | Won 2-0 | +181517 |
| top | average opponent: 1482record: 5-4 | new rating: 1517 | ||