Lachaine, Roch-Antoine
Current rating: 1378
Record: 17-25-1
| Grand Prix Montreal 2017 (AKH standard) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 2026 | Ludington, Kirk (1500) | Lost 1-2 | -171425 |
| 2standard | 2221 | Heezen, Lee (1482) | Lost 0-2 | -171408 |
| 3standard | 2403 | Emond, Maxime (1443) | Lost 0-2 | -181390 |
| 4standard | 2408 | Drysdale, Mike (1444) | Lost 0-2 | -171373 |
| 5standard | 2399 | Vasii, Erik (1446) | Won 2-0 | +201393 |
| 6standard | 2369 | Marchand, Alexandre (1449) | Draw 1-1 | +11394 |
| 7standard | 2342 | Charron, Matthew (1447) | Lost 0-2 | -171377 |
| 8standard | 2295 | Schmidt, Steven (1447) | Lost 0-2 | -171360 |
| 9standard | 2255 | Menard, Hugo (1375) | Won 2-0 | +181378 |
| top | average opponent: 1448record: 2-6-1 | new rating: 1378 | ||
| Grand Prix Quebec City 2015 (BFZ standard) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 34 | Nilsson, Daniel (1528) | Lost 0-2 | -171415 |
| 2standard | 217 | Tremblay, Felix (1482) | Won 2-0 | +191434 |
| 3standard | 241 | Brierley, Michael (1569) | Lost 0-2 | -151419 |
| 4standard | 267 | Lessard, Eric (1482) | Won 2-0 | +191438 |
| 5standard | 283 | Edmunds, Chris (1509) | Won 2-1 | +191457 |
| 6standard | 158 | Watton, Matthew (1581) | Lost 1-2 | -151442 |
| top | average opponent: 1525record: 3-3 | new rating: 1442 | ||
| Grand Prix Ottawa 2014 (KTK limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 375 | Dubreuil, Patrice (1571) | Lost 0-2 | -161467 |
| 2sealed | 438 | Samson, Louis-Alexandre (1482) | Lost 0-2 | -181449 |
| 3sealed | 607 | Ramcharitar, Jerome (1462) | Lost 0-2 | -171432 |
| top | average opponent: 1505record: 0-3 | new rating: 1432 | ||
| Grand Prix Montreal 2014 (BNG limited) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 164 | Russell, Thomas (1545) | Lost 1-2 | -171486 |
| 2sealed | 540 | Bouchard, Gabriel (1483) | Lost 1-2 | -181468 |
| 3sealed | 644 | Millard, Quin (1507) | Won 2-0 | +191487 |
| 4sealed | 260 | Turcotte, Owen (1483) | Lost 1-2 | -181469 |
| 5sealed | 569 | Iglesias, Angel (1385) | Won 2-0 | +161485 |
| 6sealed | 417 | Davis, Joshua (1460) | Won 2-1 | +181503 |
| 7sealed | 314 | Banho, Paulo (1441) | Lost 0-2 | -201483 |
| top | average opponent: 1472record: 3-4 | new rating: 1483 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 456 | Provost-Poulin, Felix (1500) | Won 2-0 | +171538 |
| 2sealed | 31 | Van Vaals, Michael (1517) | Won 2-0 | +181556 |
| 3sealed | 176 | Lalonde-Clavette, Frederic (1518) | Lost 1-2 | -191537 |
| 4sealed | 467 | Aiken, Simone (1592) | Lost 0-2 | -171520 |
| 5sealed | 370 | Guenette, Maxime (1499) | Won 2-0 | +181538 |
| 6sealed | 354 | Lessard, John (1541) | Lost 1-2 | -181520 |
| 7sealed | 378 | Mullins, Daniel (1470) | Won 2-1 | +171537 |
| 8sealed | 276 | Liorti, Andrew (1624) | Lost 1-2 | -161521 |
| 9sealed | 216 | Smith, Erik (1553) | Lost 0-2 | -181503 |
| top | average opponent: 1535record: 4-5 | new rating: 1503 | ||
| Grand Prix Quebec City 2013 (GTC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 47 | Poitras, Alexandre (1500) | Won 2-0 | +181518 |
| 2standard | 104 | Miller, Josef (1518) | Lost 0-2 | -181500 |
| 3standard | 209 | Miousse, Justin (1500) | Won 2-0 | +181518 |
| 4standard | 176 | Omar-Bujak, Hakim (1467) | Lost 1-2 | -191499 |
| 5standard | 198 | Chatel, Cedric (1501) | Won 2-1 | +181517 |
| 6standard | 198 | Perry, RJ (1430) | Lost 0-2 | -191498 |
| 7standard | 219 | Le Goff, Alexandre (1463) | Won 2-1 | +171515 |
| 8standard | 152 | Lee, Joon Soo (1631) | Won 2-1 | +201535 |
| 9standard | 113 | Noworaj, Andrew (1740) | Lost 0-2 | -141521 |
| top | average opponent: 1528record: 5-4 | new rating: 1521 | ||