Parkes, Brandon
Current rating: 1470
| Grand Prix Vancouver 2017 (modern) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 2390 | Powers, Nathan (1533) | Draw 1-1 | 01487 |
| 2modern | 2347 | Allester, Ryan (1447) | Won 2-0 | +181505 |
| 3modern | 2315 | Worden-Dean, Jake (1541) | Lost 0-2 | -181487 |
| 4modern | 2473 | Fillipi, Milan (1500) | Lost 0-2 | -171470 |
| top | average opponent: 1505record: 1-2-1 | new rating: 1470 | ||
| Grand Prix Seattle-Tacoma 2015 (legacy) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 673 | Bennett, Brenton (1536) | Won 2-0 | +191504 |
| 2legacy | 414 | Fast, Zachary (1518) | Won 2-1 | +181522 |
| 3legacy | 338 | Stivers, Josiah (1493) | Draw 1-1 | 01522 |
| 4legacy | 209 | Salles, Marcelo (1534) | Lost 0-2 | -181504 |
| 5legacy | 419 | Maginley, Corey (1530) | Lost 1-2 | -171487 |
| top | average opponent: 1522record: 2-2-1 | new rating: 1487 | ||
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 58 | Wibbens, Billy R (1500) | Won 2-0 | +181518 |
| 2standard | 123 | Watson, Garrett (1603) | Won 2-0 | +201538 |
| 3standard | 149 | Barnett, Stephen (1679) | Lost 0-2 | -161522 |
| 4standard | 177 | Whitehead, Matt (1558) | Lost 1-2 | -171505 |
| 5standard | 408 | Mcclellan, Daniel R (1500) | Lost 1-2 | -181487 |
| 6standard | 374 | Polley, Ian (1433) | Won 2-0 | +171504 |
| 7standard | 306 | Taylor, David (1474) | Won 2-1 | +171521 |
| 8standard | 192 | Chesbough, Brian (1518) | Lost 0-2 | -181503 |
| 9standard | 183 | Alston, Patrick (1505) | Lost 0-0 | -181485 |
| top | average opponent: 1530record: 4-5 | new rating: 1485 | ||