Duff, Brendon
Current rating: 1473
| Grand Prix Toronto 2016 (SOI standard) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 152 | Ojapalo, Albert (1500) | Lost 1-2 | -181473 |
| top | record: 0-1 | new rating: 1473 | ||
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 515 | McManaway, Dan (1500) | Won 2-0 | +191500 |
| 2standard | 154 | Poudrier, Antoine (1518) | Won 2-1 | +181518 |
| 3standard | 313 | Holosko, Joel (1734) | Lost 1-2 | -141504 |
| 4standard | 484 | Grgurich, Jamie (1516) | Won 2-1 | +181522 |
| 5standard | 245 | Lansche, Derek (1667) | Lost 1-2 | -151507 |
| 6standard | 448 | Andrews, Joey (1630) | Lost 1-2 | -161491 |
| top | average opponent: 1594record: 3-3 | new rating: 1491 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 96 | Do, Sang (1465) | Lost 0-2 | -191481 |
| 2sealed | 441 | Wilson, Bradford (1482) | Won 2-0 | +181499 |
| 3sealed | 382 | Trudel, Mathew (1504) | Lost 0-2 | -181481 |
| top | average opponent: 1484record: 1-2 | new rating: 1481 | ||