Duncan-York, Justin
Current rating: 1501
Record: 14-16-1
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 415 | Smith, Brendan (1504) | Won 2-1 | +171535 |
| 2legacy | 235 | Lewis, Matthew (1649) | Won 2-1 | +201555 |
| 3legacy | 66 | Rodriguez, Franky (1580) | Lost 0-2 | -171538 |
| 4legacy | 318 | Brewer, Robert (1534) | Lost 0-2 | -181520 |
| 5legacy | 593 | Maginley, Corey (1492) | Lost 0-2 | -191501 |
| top | average opponent: 1552record: 2-3 | new rating: 1501 | ||
| Grand Prix Vancouver 2017 (modern) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 2175 | Trendall, Tim (1497) | Won 2-1 | +181493 |
| 4modern | 2027 | Hudson, Micheal (1423) | Won 2-0 | +171510 |
| 5modern | 2007 | Wellons, Mark (1586) | Won 2-1 | +201530 |
| 6modern | 2021 | Zhang, Boyang (1593) | Won 2-0 | +191549 |
| 7modern | 2004 | Prost, Andrejs (2003) | Won 2-1 | +251574 |
| 8modern | 2007 | Fortanely, Bobby (1941) | Lost 0-2 | -111563 |
| 9modern | 2036 | Fillion, Pierre (1651) | Lost 0-2 | -171546 |
| 10modern | 2086 | Laughlin, Pierson (1877) | Lost 1-2 | -121534 |
| 11modern | 2125 | Li, Bill (1610) | Lost 0-2 | -161518 |
| top | average opponent: 1687record: 5-4 | new rating: 1518 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 107 | Lockamy, Ryan (1500) | Lost 0-2 | -171452 |
| 2standard | 659 | Summers, Andrew (1482) | Won 2-0 | +181470 |
| 3standard | 569 | Mellor, Brendan (1557) | Lost 1-2 | -161454 |
| 4standard | 725 | Johnson, Dustin (1426) | Won 1-0 | +171471 |
| 5standard | 511 | Smith, Paige 2 (1499) | Lost 1-2 | -171454 |
| 6standard | 609 | Creasman, Jason (1508) | Won 2-1 | +191473 |
| 7standard | 438 | Myers, Daniel (1458) | Won 2-1 | +181491 |
| 8standard | 295 | Avila, Matt (1624) | Lost 0-2 | -161475 |
| top | average opponent: 1507record: 4-4 | new rating: 1475 | ||
| Grand Prix Vancouver 2016 (OGW limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 691 | Boykowich, Dylan (1510) | Draw 1-1 | +11486 |
| 2sealed | 449 | Hefner, Duke (1499) | Won 2-0 | +181504 |
| 3sealed | 358 | Smith, Brendan (1449) | Lost 0-0 | -191485 |
| 4sealed | 556 | Chambers, Adam (1598) | Lost 1-2 | -161469 |
| top | average opponent: 1514record: 1-2-1 | new rating: 1469 | ||
| Grand Prix Vancouver 2014 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 48 | Reedy, Justin (1500) | Won 2-0 | +181518 |
| 2standard | 144 | Beaudry, Justin (1518) | Lost 1-2 | -181500 |
| 3standard | 388 | Nguyen, Edward (1518) | Lost 0-2 | -181482 |
| 4standard | 430 | Shivji, Qail (1481) | Won 2-0 | +181500 |
| 5standard | 283 | DiMaggio, Matthew (1673) | Lost 0-2 | -151485 |
| top | average opponent: 1538record: 2-3 | new rating: 1485 | ||