Duff, Cassandra
Current rating: 1555
| Grand Prix Montreal 2016 (EMN limited) | starting rating: 1576 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2006 | Barash, Zachary (1663) | Lost 0-2 | -161560 |
| 2sealed | 2350 | Giaccone, Marcello (1484) | Won 2-0 | +161576 |
| 3sealed | 2493 | Michaud, Paul (1502) | Draw 0-0 | -11575 |
| 4sealed | 2407 | Rouleau, Pierre-Olivier (1484) | Lost 0-2 | -201555 |
| top | average opponent: 1533record: 1-2-1 | new rating: 1555 | ||
| Grand Prix Montreal 2015 (DTK limited) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 209 | Iriyama, Daiki (1484) | Won 2-0 | +181545 |
| 2sealed | 209 | Damien, Francois (1597) | Lost 0-2 | -171528 |
| 3sealed | 358 | Lyons-McAlpin, John-Fr (1502) | Lost 0-2 | -191509 |
| 4sealed | 480 | Lucini, Stefano Maria (1432) | Lost 0-2 | -191490 |
| 5sealed | 428 | Ouellet, Vincent3385 (1465) | Won 2-0 | +171507 |
| 6sealed | 350 | Laflamme, Martin (1486) | Won 2-0 | +181525 |
| 7sealed | 291 | Reno, Dominique (1482) | Won 2-0 | +171542 |
| 8sealed | 219 | Wu, Gavin (1476) | Won 2-1 | +171559 |
| 9sealed | 133 | Weber, Ethan (1521) | Won 2-0 | +171576 |
| top | average opponent: 1494record: 6-3 | new rating: 1576 | ||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1045 | Mayhew, Ian (1500) | Won 2-1 | +181518 |
| 2modern | 710 | W, Addi (1604) | Won 2-1 | +201538 |
| 3modern | 835 | Lawrence, Michael (1482) | Won 2-0 | +171555 |
| 4modern | 816 | Pingree, Brett (1554) | Won 2-0 | +181573 |
| 5modern | 731 | Holiday, Nathan (2139) | Lost 0-2 | -91564 |
| 6modern | 826 | Benck, Kora (1613) | Lost 0-2 | -171547 |
| 7modern | 836 | Chernyak, Anthony (1506) | Lost 0-2 | -191528 |
| 8modern | 900 | Arnold, Andrew (1506) | Lost 0-2 | -181510 |
| 9modern | 877 | Wright, William (1498) | Won 2-0 | +171527 |
| top | average opponent: 1600record: 5-4 | new rating: 1527 | ||