Whitehead, Jason
Current rating: 1344
Record: 5-15-3
| Grand Prix Montreal 2015 (DTK limited) | starting rating: 1376 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 414 | Leblanc Falardeau, Cedric (1480) | Lost 0-2 | -161360 |
| 2sealed | 314 | Cousin, Gautier (1520) | Lost 0-2 | -161344 |
| top | average opponent: 1500record: 0-2 | new rating: 1344 | ||
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1405 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 92 | Pitman, Matt (1521) | Lost 0-2 | -151390 |
| 2standard | 585 | Carman, Chad (1430) | Won 2-1 | +181408 |
| 3standard | 479 | O'Neal, Sean (1501) | Lost 0-2 | -161392 |
| 4standard | 621 | Albert, Levi (1483) | Lost 0-2 | -161376 |
| top | average opponent: 1484record: 1-3 | new rating: 1376 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 111 | Ryan, Jerry (1500) | Won 2-1 | +191451 |
| 2legacy | 247 | Long, David (1568) | Won 2-1 | +201471 |
| 3legacy | 134 | Dooley, Justyn (1594) | Lost 0-2 | -161455 |
| 4legacy | 379 | Johnson, James (1433) | Lost 1-2 | -181437 |
| 5legacy | 393 | Duong, Hieu (1501) | Lost 0-2 | -171420 |
| 6legacy | 425 | Hoppe, Brittany (1484) | Won 2-0 | +191439 |
| 7legacy | 299 | Bissonnette, Richard (1497) | Lost 0-2 | -171422 |
| 8legacy | 267 | Gutierrez, Fransico (1483) | Lost 0-2 | -171405 |
| top | average opponent: 1507record: 3-5 | new rating: 1405 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 27 | Wildsmith, Nathaniel (1500) | Lost 1-2 | -181449 |
| 2sealed | 399 | Au-Yeung, Allan (1481) | Lost 1-2 | -171432 |
| top | average opponent: 1491record: 0-2 | new rating: 1432 | ||
| Grand Prix Quebec City 2013 (GTC standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 190 | winch, Rogan (1518) | Draw 1-1 | +11484 |
| 2standard | 192 | Boisvert, Alexandre (1500) | Draw 1-1 | 01484 |
| 3standard | 292 | Pepin, Jonathan (1500) | Lost 0-2 | -181466 |
| 4standard | 364 | Bertiaux, Michael (1461) | Won 2-0 | +181484 |
| 5standard | 305 | Laterreur, Etienne (1499) | Lost 0-2 | -171467 |
| top | average opponent: 1496record: 1-2-2 | new rating: 1467 | ||
| Grand Prix Toronto 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 11 | Hatton, Kyle (1500) | Draw 1-1 | 01500 |
| 2modern | 255 | Moon, Chris (1563) | Lost 1-2 | -171483 |
| top | average opponent: 1532record: 0-1-1 | new rating: 1483 | ||