Koffler, Richard
Current rating: 1480
Record: 13-16-2
| Grand Prix Montreal 2019 (ELD limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 336 | Dodson, Ted (1469) | Won 2-0 | +171536 |
| 2sealed | 163 | Costa, Evan (1468) | Lost 1-2 | -191517 |
| 3sealed | 230 | Boucher, Yannick (1483) | Lost 1-2 | -191498 |
| 4sealed | 291 | Rioux, Marc-Antoine (1474) | Lost 1-2 | -181480 |
| top | average opponent: 1473record: 1-3 | new rating: 1480 | ||
| Grand Prix Montreal 2018 (GRN limited) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 281 | Dionne, David (1557) | Lost 0-2 | -171458 |
| 2sealed | 308 | Banman, Desiree (1483) | Lost 1-2 | -171441 |
| 3sealed | 488 | Gauthier, Eric (1276) | Won 2-0 | +151456 |
| 4sealed | 439 | Frazer, Michael (1466) | Won 2-0 | +181474 |
| 5sealed | 305 | Creutzberger, Michelle (1502) | Won 2-0 | +181492 |
| 6sealed | 208 | Vitullo, Joshua (1618) | Won 2-1 | +211513 |
| 7sealed | 201 | Patelakis, Steve (1739) | Won 2-1 | +221535 |
| 8sealed | 151 | Aiello, Justin (1648) | Lost 0-2 | -161519 |
| top | average opponent: 1536record: 5-3 | new rating: 1519 | ||
| Grand Prix Toronto 2017 (HOU limited) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 198 | Dolan, James (1518) | Won 2-1 | +191476 |
| 3sealed | 249 | Lu, Jiekun (1632) | Won 2-1 | +211497 |
| 4sealed | 57 | Wallerstein, Robert (1752) | Lost 1-2 | -141483 |
| 5sealed | 103 | Spencer, Danny (1792) | Won 2-1 | +241507 |
| 6sealed | 74 | Tessis, Eduardo (1621) | Draw 1-1 | +21509 |
| 7sealed | 105 | Sommerville, Duncan (1561) | Lost 0-2 | -171492 |
| 8sealed | 201 | Dekay, Peter (1545) | Lost 0-2 | -171475 |
| top | average opponent: 1632record: 3-3-1 | new rating: 1475 | ||
| Grand Prix Montreal 2016 (EMN limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 2077 | Ferry, Sergio (1575) | Draw 0-0 | +21468 |
| 4sealed | 2139 | Jurj, Traian (1534) | Won 2-0 | +191487 |
| 5sealed | 2069 | Bourgoin, Zakari (1615) | Lost 0-2 | -161471 |
| 6sealed | 2160 | Hoogsteen, Riley (1528) | Won 2-0 | +191490 |
| 7sealed | 2092 | Noble, Charles (1571) | Lost 0-2 | -161474 |
| 8sealed | 2177 | Cohen, Travis (1542) | Lost 0-0 | -171457 |
| top | average opponent: 1561record: 2-3-1 | new rating: 1457 | ||
| Grand Prix Montreal 2015 (DTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 337 | Raymond, Matthew (1500) | Won 2-1 | +181518 |
| 2sealed | 274 | Nightingale, Tyler (1663) | Lost 1-2 | -151503 |
| 3sealed | 449 | Pinheiro, Steve (1465) | Lost 0-2 | -191484 |
| 4sealed | 457 | Newell, Evan (1481) | Won 2-1 | +181502 |
| 5sealed | 290 | Michaud, Frederic (1483) | Lost 1-2 | -181484 |
| 6sealed | 373 | Bussiere, Jason (1486) | Lost 0-2 | -181466 |
| top | average opponent: 1513record: 2-4 | new rating: 1466 | ||