Gallacher, Derek
Current rating: 1492
Record: 21-23
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 269 | Hackbert, Matthew (1572) | Won 2-0 | +201504 |
| 2legacy | 22 | Raflowitz, Taylor (1627) | Won 2-1 | +201524 |
| 3legacy | 139 | Biaggi, Andrea (1592) | Lost 1-2 | -171507 |
| 4legacy | 196 | Wallace, Adam (1532) | Lost 1-2 | -171490 |
| 5legacy | 294 | Wilkinson, Nathaniel (1503) | Lost 0-2 | -181472 |
| 6legacy | 328 | Mitchell, Raymond (1622) | Lost 1-2 | -151457 |
| 7legacy | 287 | Bergeron, Henri (1467) | Won 2-0 | +181475 |
| 8legacy | 226 | Akhundzadeh, Amir (1460) | Won 2-1 | +171492 |
| top | average opponent: 1547record: 4-4 | new rating: 1492 | ||
| Grand Prix Toronto 2019 (modern) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 339 | Thorns, Nicholas (1500) | Won 2-1 | +171551 |
| 2modern | 194 | Hatch, Tim (1763) | Lost 0-2 | -141537 |
| 3modern | 309 | Pasch, Korey (1444) | Lost 1-2 | -201517 |
| 4modern | 412 | Abraham, Ryan (1590) | Lost 0-2 | -161501 |
| 5modern | 520 | Keller, Christian (1569) | Lost 1-2 | -171484 |
| top | average opponent: 1573record: 1-4 | new rating: 1484 | ||
| Grand Prix Toronto 2018 (modern) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 447 | Fontaine, Elizabeth (1500) | Won 2-0 | +191491 |
| 2modern | 364 | Moody, Gavin (1516) | Won 2-1 | +181509 |
| 3modern | 210 | Joseph-Pare, Bertrand (1602) | Lost 0-2 | -161493 |
| 4modern | 496 | Lagace, Jean-Samuel (1515) | Won 2-0 | +181511 |
| 5modern | 234 | Lopez, Eric (1614) | Lost 1-2 | -161495 |
| 6modern | 485 | MacDonald, Daniel (1475) | Won 2-1 | +181513 |
| 7modern | 175 | Herron, Travis (1463) | Won 2-1 | +171530 |
| 8modern | 83 | Bisson, Stephane (1585) | Won 2-1 | +191549 |
| 9modern | 95 | Potier, Robert (1537) | Lost 0-1 | -181531 |
| 10modern | 119 | Ha, Chris (1665) | Won 2-0 | +201551 |
| 11modern | 68 | Coote, Chris (1595) | Lost 0-2 | -171534 |
| top | average opponent: 1552record: 7-4 | new rating: 1534 | ||
| Grand Prix Toronto 2016 (SOI standard) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 203 | Stekar, Stefan (1500) | Lost 1-2 | -181510 |
| 2standard | 440 | Oliveira, Jesse (1486) | Won 2-0 | +171527 |
| 3standard | 531 | Leonard Huu Nguyen, Christopher (1527) | Lost 0-2 | -181509 |
| 4standard | 610 | Rew, Sabrina (1482) | Lost 0-2 | -181491 |
| 5standard | 666 | Oliver, Tristan (1463) | Lost 0-2 | -191472 |
| top | average opponent: 1491record: 1-4 | new rating: 1472 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 479 | Schmidt, Michael (1446) | Lost 1-2 | -191481 |
| 2modern | 632 | Tarleton, Alex (1483) | Won 2-0 | +181499 |
| 3modern | 1000 | Dulian, Michael (1485) | Won 2-0 | +181517 |
| 4modern | 653 | Ozkan, Tristan (1522) | Won 2-0 | +181535 |
| 5modern | 277 | Zorzi, Josh (1555) | Won 2-1 | +181553 |
| 6modern | 101 | Capriolo-Morris, Primo (1474) | Won 2-1 | +171570 |
| 7modern | 169 | Dougherty, Kyle (1565) | Won 2-1 | +181588 |
| 8modern | 35 | Herberholz, Mark (1983) | Lost 1-2 | -111577 |
| 9modern | 173 | Kaatz, Steven (1571) | Lost 1-2 | -191558 |
| 10modern | 249 | Pullen, Jamie (1564) | Lost 0-2 | -171541 |
| 11modern | 312 | Fennell, Christopher (1818) | Lost 0-2 | -131528 |
| 12modern | 284 | Cox, Douglas (1562) | Lost 0-2 | -181510 |
| 13modern | 254 | Slease, Jacob (1455) | Won 2-0 | +171527 |
| 14modern | 219 | Pauloff, Nicholas (1592) | Lost 0-2 | -171510 |
| 15modern | 203 | Frauhiger, Tyler (1506) | Won 2-0 | +181528 |
| top | average opponent: 1572record: 8-7 | new rating: 1528 | ||