Kok, Justin
Current rating: 1462
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 468 | Kor, Frank (1601) | Won 2-1 | +211491 |
| 2standard | 182 | Gillis, Daniel (1645) | Won 2-0 | +201511 |
| 3standard | 276 | Van Fleet, Adam (1739) | Lost 1-2 | -141497 |
| 4standard | 342 | Longpre, Eric (1484) | Lost 1-2 | -181479 |
| 5standard | 588 | Asselin, Eric (1509) | Lost 1-2 | -171462 |
| top | average opponent: 1596record: 2-3 | new rating: 1462 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 421 | Cella, Michael (1500) | Won 2-1 | +191466 |
| 2sealed | 101 | Colista, Anthony (1518) | Lost 0-2 | -181448 |
| 3sealed | 441 | Jiang, Jay (1653) | Won 2-1 | +221470 |
| top | average opponent: 1557record: 2-1 | new rating: 1470 | ||
| Grand Prix Toronto 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 277 | Hurej, John (1482) | Lost 0-2 | -181482 |
| 2modern | 375 | Dosani, Reyhan (1485) | Lost 0-2 | -181464 |
| 3modern | 427 | Morton, Daniel (1508) | Lost 0-2 | -171447 |
| top | average opponent: 1492record: 0-3 | new rating: 1447 | ||