Petkau, Chris
Current rating: 1551
Record: 21-19-1
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| B1sealed | 474 | Aquilina, Patrick (1449) | Won 2-0 | +161547 |
| B2sealed | 405 | Abel, Max (1685) | Lost 1-2 | -151532 |
| B3sealed | 383 | Rast, Samson (1527) | Won 2-1 | +181550 |
| B4sealed | 179 | Kennon, Jesse (1651) | Lost 1-2 | -171533 |
| B5sealed | 359 | Kehoe, Kyle (1468) | Won 2-0 | +171550 |
| B6sealed | 309 | Simon, Michael (1617) | Won 2-1 | +191569 |
| B7sealed | 218 | Rodaitis, Michael (1539) | Lost 0-2 | -181551 |
| top | average opponent: 1562record: 4-3 | new rating: 1551 | ||
| Grand Prix Vancouver 2018 (UMA limited) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 290 | Larsson, Chris (1596) | Lost 0-2 | -161461 |
| 2sealed | 362 | Cho, Steven (1482) | Won 2-0 | +191480 |
| 3sealed | 309 | Baumgarten, Joseph (1573) | Won 2-0 | +191499 |
| 4sealed | 199 | Stone, Tim (1493) | Won 2-0 | +181517 |
| 5sealed | 59 | Kesting, Joseph (1588) | Lost 1-2 | -171500 |
| 6sealed | 212 | Tierney, Patrick (1861) | Won 2-1 | +251525 |
| 7sealed | 150 | Carr, Colin (1545) | Won 2-0 | +181543 |
| 8sealed | 79 | Fang, Percy (1855) | Lost 1-2 | -121531 |
| top | average opponent: 1624record: 5-3 | new rating: 1531 | ||
| Grand Prix Vancouver 2016 (OGW limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 377 | Sharp, Jeff (1482) | Lost 0-2 | -181461 |
| 2sealed | 678 | Pottinger, Troy (1514) | Lost 1-2 | -171444 |
| 3sealed | 831 | Repa, David (1377) | Won 0-0 | +171461 |
| 4sealed | 773 | Porteous, Chandler (1481) | Won 2-1 | +181479 |
| 5sealed | 539 | Lucas, Gertjan (1424) | Won 2-1 | +171496 |
| 6sealed | 465 | Rikhof, Daven (1521) | Won 2-0 | +191515 |
| 7sealed | 181 | Gibson, Jamal (1509) | Lost 1-2 | -181497 |
| 8sealed | 325 | Hunter, Sean (1410) | Lost 0-2 | -201477 |
| top | average opponent: 1465record: 4-4 | new rating: 1477 | ||
| Grand Prix Vancouver 2014 (THS standard) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 45 | Hsu, Henry S (1504) | Lost 0-2 | -181518 |
| 2standard | 364 | Fleurant, Jason (1570) | Lost 0-2 | -171501 |
| 3standard | 453 | Tindale, Scott (1465) | Lost 0-2 | -191482 |
| 4standard | 458 | Louttit, Orien (1445) | Lost 1-2 | -191463 |
| 5standard | 424 | Pellegrino, Marco (1428) | Won 2-0 | +181481 |
| 6standard | 357 | Randhawa, Gulzaar (1448) | Lost 1-2 | -191462 |
| 7standard | 290 | Smith, Bryan (1439) | Lost 0-2 | -181444 |
| 8standard | 236 | White, Aiden (1390) | Won 2-0 | +171461 |
| 9standard | 190 | Liu, Stephen (1473) | Won 2-1 | +181479 |
| top | average opponent: 1462record: 3-6 | new rating: 1479 | ||
| Grand Prix Vancouver 2012 (AVR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 157 | Phaphon, Stanley (1500) | Lost 0-2 | -181482 |
| 2sealed | 325 | Bertagnolli, Scott (1481) | Won 2-0 | +181500 |
| 3sealed | 254 | Smith, Ryan E (1500) | Lost 0-2 | -181482 |
| 4sealed | 355 | Miller, Nate (1482) | Won 2-1 | +181500 |
| 5sealed | 229 | MacLean, Aaron (1498) | Lost 1-2 | -181482 |
| 6sealed | 277 | Godard, Glenn (1441) | Draw 1-1 | -11481 |
| 7sealed | 229 | Anderson, Kyle (1460) | Won 2-1 | +181499 |
| 8sealed | 170 | Iwaasa, Juel (1502) | Won 2-0 | +181517 |
| 9sealed | 131 | Aiken, Simone (1603) | Won 2-1 | +191536 |
| top | average opponent: 1496record: 5-3-1 | new rating: 1536 | ||