De Jong, John
Current rating: 1514
Record: 12-11-1
| Grand Prix Montreal 2016 (EMN limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2038 | Brown, Turner (1500) | Won 2-0 | +171537 |
| 2sealed | 2125 | Larsson, Chris (1556) | Lost 0-2 | -171520 |
| 3sealed | 2455 | Albert, Philip (1487) | Won 0-0 | +171537 |
| 4sealed | 2209 | Scott, William (1396) | Won 2-0 | +161553 |
| 5sealed | 2806 | Wagenhoffer, Robert (1381) | Lost 1-2 | -211532 |
| 6sealed | 2335 | Blais, Jean-Philippe (1646) | Lost 0-2 | -161516 |
| 7sealed | 2327 | Al-Kana, Basel (1499) | Won 2-0 | +171533 |
| 8sealed | 2262 | Brian, Thomas (1483) | Lost 0-0 | -191514 |
| top | average opponent: 1494record: 4-4 | new rating: 1514 | ||
| Grand Prix Montreal 2015 (DTK limited) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 250 | Bernier, Francis (1495) | Won 2-1 | +181514 |
| 2sealed | 79 | Sher, Adam (1578) | Won 2-0 | +191533 |
| 3sealed | 136 | Macaulay, Casper (1536) | Won 2-0 | +181551 |
| 4sealed | 26 | Nguyen, Thien (1822) | Lost 0-2 | -131538 |
| 5sealed | 135 | McCutcheon, Jordan (1533) | Lost 0-2 | -181520 |
| top | average opponent: 1593record: 3-2 | new rating: 1520 | ||
| Grand Prix Ottawa 2014 (KTK limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 82 | Labonte, Hugo (1500) | Won 2-1 | +181534 |
| 2sealed | 193 | Zhang, Min (1500) | Lost 1-2 | -191515 |
| 3sealed | 375 | Knipe, Chris (1517) | Draw 1-1 | 01515 |
| 4sealed | 419 | Bernier, Cyril (1432) | Lost 0-2 | -191496 |
| top | average opponent: 1487record: 1-2-1 | new rating: 1496 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 348 | Auterhoff, Mark (1500) | Won 2-1 | +181518 |
| 2sealed | 122 | Tang, Richard (1518) | Won 2-0 | +181536 |
| 3sealed | 328 | Borshay, Paul (1534) | Won 2-1 | +181554 |
| 4sealed | 166 | Guy, Curtis A (1500) | Lost 1-2 | -191535 |
| 5sealed | 221 | Smith, Chris [CAN] (1535) | Lost 1-2 | -181517 |
| 6sealed | 296 | Deal, Peter E (1483) | Lost 1-2 | -191498 |
| 7sealed | 389 | Ng, Jerry (1496) | Won 2-1 | +181516 |
| top | average opponent: 1509record: 4-3 | new rating: 1516 | ||