Byck, Jacob
Current rating: 1450
| Grand Prix Toronto 2019 (modern) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 51 | Barrette, Nathan (1564) | Lost 1-2 | -161423 |
| 2modern | 328 | Loblaw, Ian (1476) | Won 2-0 | +191442 |
| 3modern | 492 | Chappel, Robert (1499) | Won 2-0 | +191461 |
| 4modern | 330 | Poupart, Olivier (1666) | Lost 1-2 | -141447 |
| 5modern | 447 | Welch, Jordan (1503) | Won 2-0 | +191466 |
| 6modern | 254 | DiLoreto, Zachary (1480) | Lost 1-2 | -181448 |
| 7modern | 336 | Menard, Miguel (1504) | Won 2-1 | +191467 |
| 8modern | 213 | Warkentin, Nathan (1518) | Lost 0-2 | -171450 |
| top | average opponent: 1526record: 4-4 | new rating: 1450 | ||
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 448 | Li, Christopher (1481) | Won 2-1 | +191448 |
| 2standard | 329 | Hoffmann, Matthew (1597) | Lost 1-2 | -151433 |
| 3standard | 613 | Vaillancourt, Adam (1500) | Lost 1-2 | -171416 |
| 4standard | 546 | Ernst, Brianna (1482) | Won 2-0 | +191435 |
| 5standard | 575 | See, Wesley (1545) | Won 2-0 | +201455 |
| 6standard | 313 | Ellis, Eric (1519) | Lost 1-2 | -161439 |
| top | average opponent: 1521record: 3-3 | new rating: 1439 | ||
| Grand Prix Montreal 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 456 | Seigman, Daniel (1566) | Lost 1-2 | -171483 |
| 2sealed | 413 | Bain, Scott (1498) | Won 2-0 | +181501 |
| 3sealed | 471 | Gagnon, Gabriel (1500) | Lost 1-2 | -181483 |
| 4sealed | 588 | Miniati, Francis (1484) | Lost 1-2 | -181465 |
| 5sealed | 565 | Hamel, Nicolas (1463) | Lost 0-2 | -181447 |
| 6sealed | 482 | Tansey, Stephen (1446) | Lost 0-2 | -181429 |
| top | average opponent: 1493record: 1-5 | new rating: 1429 | ||