Hjertaas, Kerry
Current rating: 1496
Record: 12-12 (GP) / 1-4 (professional)
| Grand Prix Calgary 2019 (modern) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 89 | Ballantyne, Clifford (1464) | Won 2-0 | +171535 |
| 2modern | 71 | Dempster, Darin (1448) | Lost 1-2 | -201515 |
| 3modern | 252 | Sadler, Leif (1500) | Won 2-0 | +181533 |
| 4modern | 188 | Doherty, Mike (1469) | Lost 1-2 | -191514 |
| 5modern | 320 | Toth, Luis (1499) | Lost 1-2 | -181496 |
| top | average opponent: 1476record: 2-3 | new rating: 1496 | ||
| Grand Prix Calgary 2013 (M14 standard) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 10 | Vargo, William J (1500) | Lost 0-0 | -171442 |
| 2standard | 41 | Steele, Brett (1518) | Lost 1-2 | -171425 |
| 3standard | 206 | Graham, Martin (1499) | Won 2-0 | +191444 |
| 4standard | 171 | Okrainec, Scott (1483) | Won 2-1 | +191463 |
| 5standard | 41 | Malina, Joel (1553) | Lost 0-2 | -161447 |
| 6standard | 166 | Zafra, Marcel Angelo (1818) | Won 2-1 | +241471 |
| 7standard | 72 | Day, Danny (1544) | Won 2-0 | +201491 |
| 8standard | 44 | Cameron-Weir, Craig (1570) | Won 2-0 | +191510 |
| 9standard | 32 | Maguire, Jared (1579) | Won 2-1 | +191529 |
| 10standard | 19 | La Forest, Adam (1572) | Lost 1-2 | -171512 |
| 11standard | 41 | Moore, Christopher (1611) | Lost 0-2 | -161496 |
| 12standard | 54 | Batty, Andrew (1508) | Won 2-1 | +181514 |
| 13standard | 40 | Robin, Noel (1595) | Won 2-1 | +201534 |
| 14standard | 30 | Danylyshen, Nicholas (1662) | Lost 1-2 | -161518 |
| top | average opponent: 1572record: 8-6 | new rating: 1518 | ||
| Grand Prix Montreal 2007 (Time Spiral block) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 4block | 40 | Nesrallah, Moses (1500) | Won 2-1 | +191480 |
| 5block | 21 | Angelo, Joe (1577) | Won 2-1 | +191499 |
| 6block | 16 | Coimbra, Andre (1844) | Lost 0-2 | -121487 |
| 7block | 47 | Majlaton, Alex (1696) | Lost 1-2 | -141473 |
| 8block | 55 | Mahler, Hans (1683) | Lost 0-0 | -141459 |
| top | average opponent: 1660record: 2-3 | new rating: 1459 | ||
| Pro Tour Prague 2006 (DIS draft) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 89 | Smee, James (1563) | Lost 0-2 | -171483 |
| 2draft | 17 | Reinderman, Dimitri (1731) | Lost 1-2 | -131470 |
| 3draft | 168 | Velhinho, Pedro (1675) | Won 2-1 | +211491 |
| 4draft | 195 | Ng, Soon Lye (1521) | Lost 1-2 | -171474 |
| 6draft | 127 | Eder, Wolfgang (1763) | Lost 0-2 | -131461 |
| top | average opponent: 1650record: 1-4 | new rating: 1461 | ||