Johnstone, Ian
Current rating: 1562
Record: 31-28
| Grand Prix Montreal 2019 (ELD limited) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 313 | Laplante, Christian (1571) | Won 2-0 | +181563 |
| 2sealed | 123 | Fincham, Phil (1423) | Won 2-1 | +161579 |
| 3sealed | 87 | Liu, Ying-Di (1541) | Lost 1-2 | -191560 |
| 4sealed | 212 | Schmaltz, Matt (1693) | Won 2-1 | +201580 |
| 5sealed | 54 | Huard, Charles (1545) | Lost 1-2 | -181562 |
| 6sealed | 137 | England, Jacob (1525) | Won 2-0 | +171579 |
| 7sealed | 84 | Trudel, Christian (1622) | Lost 0-2 | -171562 |
| top | average opponent: 1560record: 4-3 | new rating: 1562 | ||
| Grand Prix Montreal 2018 (GRN limited) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 203 | Berry, Kirk (1657) | Lost 0-2 | -161566 |
| 2sealed | 255 | Spurrell, Alexander (1487) | Lost 0-2 | -201546 |
| 3sealed | 483 | Parent, Daylen (1465) | Won 2-1 | +171563 |
| 4sealed | 461 | Dicaire, Dan (1562) | Lost 0-2 | -181545 |
| top | average opponent: 1543record: 1-3 | new rating: 1545 | ||
| Grand Prix Montreal 2015 (DTK limited) | starting rating: 1626 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 287 | Corbeil, Louis-Philipp (1504) | Lost 0-2 | -201606 |
| 2sealed | 305 | Brunet, Carine (1482) | Won 2-0 | +161622 |
| 3sealed | 425 | Gibeault, Gilles (1575) | Lost 1-2 | -191603 |
| 4sealed | 451 | McCarrell, Jason (1450) | Lost 1-2 | -211582 |
| top | average opponent: 1502record: 1-3 | new rating: 1582 | ||
| Grand Prix Ottawa 2014 (KTK limited) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 331 | Koch, Franz (1392) | Won 2-0 | +151597 |
| 2sealed | 80 | Corriveau, Maxence (1518) | Won 2-0 | +161613 |
| 3sealed | 60 | Faure, Stephane (1727) | Won 2-0 | +201633 |
| 4sealed | 132 | Le Gendre, Randy (1536) | Lost 1-2 | -191614 |
| 5sealed | 255 | Butterfield, Nathaniel (1532) | Lost 0-2 | -201594 |
| 6sealed | 201 | Henderson, Seth (1524) | Won 2-0 | +171611 |
| 7sealed | 200 | Lefrancois Vaudrin, Ch (1542) | Won 2-1 | +171628 |
| 8sealed | 106 | Reinhardt, Adam (1617) | Won 2-0 | +171645 |
| 9sealed | 64 | Trites, Ceilidh (1584) | Lost 1-2 | -191626 |
| top | average opponent: 1552record: 6-3 | new rating: 1626 | ||
| Grand Prix Montreal 2014 (BNG limited) | starting rating: 1550 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 45 | Davies, Shawn (1478) | Won 2-1 | +171567 |
| 2sealed | 309 | De Azevedo Piovezan, F (1518) | Won 2-0 | +171584 |
| 3sealed | 67 | Mekallach, Ahmed (1536) | Won 2-0 | +171601 |
| 4sealed | 86 | Sutliff, Casey (1588) | Won 2-0 | +181619 |
| 5sealed | 26 | Culligan, Michael (1573) | Lost 1-2 | -191600 |
| 6sealed | 86 | Anderson, Robert (1697) | Won 2-1 | +201620 |
| 7sealed | 154 | Brown, Ethan (1544) | Lost 1-2 | -191601 |
| 8sealed | 224 | Mostarac, Demetre (1578) | Lost 0-2 | -191582 |
| top | average opponent: 1564record: 5-3 | new rating: 1582 | ||
| Grand Prix Quebec City 2013 (GTC standard) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 156 | Simard Daigle, Yan (1516) | Won 2-0 | +191511 |
| 3standard | 16 | Smalley, Alex (1536) | Lost 0-2 | -181493 |
| 4standard | 216 | Sutton, Kevon (1518) | Won 2-0 | +191512 |
| 5standard | 153 | Lane, Mikael (1538) | Won 2-1 | +181530 |
| 6standard | 68 | Tran, Anthony (1683) | Won 2-0 | +211551 |
| 7standard | 55 | Rousseau, Hugo (1562) | Won 2-0 | +181569 |
| 8standard | 12 | De Carolis, Paul (1515) | Won 2-1 | +171586 |
| 9standard | 6 | Potter, Aaron (1602) | Won 2-1 | +181604 |
| 10standard | 6 | Tomik, Steve (1780) | Lost 1-2 | -141590 |
| 11standard | 21 | Li, Bo 4944 (1829) | Won 2-1 | +221612 |
| 12standard | 17 | Tse, Felix (1889) | Lost 0-2 | -131599 |
| 13standard | 30 | Richer, Mickel (1613) | Lost 0-2 | -181581 |
| 14standard | 39 | Hum, Barry (1695) | Lost 0-2 | -161565 |
| 15standard | 43 | Walker, Noah (1753) | Lost 0-2 | -151550 |
| top | average opponent: 1645record: 8-6 | new rating: 1550 | ||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 321 | Bogdan, Eric (1518) | Won 2-0 | +191501 |
| 3sealed | 5 | Burns, Dick (1481) | Won 2-1 | +171518 |
| 4sealed | 92 | Xing, Tinac (1644) | Won 2-1 | +201538 |
| 5sealed | 97 | Lloyd, Alex (1543) | Lost 0-2 | -171521 |
| 6sealed | 151 | Baker, Justin (1581) | Won 2-1 | +191540 |
| 7sealed | 48 | Leitner, Benjamin (1777) | Lost 1-2 | -141526 |
| 8sealed | 251 | Berrios, Stephen (1651) | Lost 1-2 | -161510 |
| 9sealed | 219 | Alfred, Lyall (1519) | Lost 1-2 | -181492 |
| top | average opponent: 1589record: 4-4 | new rating: 1492 | ||
| Grand Prix Montreal 2011 (M12 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 373 | Couture, Jean-Philippe (1500) | Lost 0-2 | -181482 |
| 2sealed | 500 | Gascon, Jean-Francois (1480) | Won 2-1 | +181500 |
| 3sealed | 530 | Chaurette, Benoit (1547) | Won 2-1 | +191519 |
| 4sealed | 457 | Onland, Jesse (1476) | Lost 0-2 | -191500 |
| 5sealed | 504 | Lapan, Felix (1492) | Lost 0-2 | -181482 |
| top | average opponent: 1499record: 2-3 | new rating: 1482 | ||