Bok, Jan
Current rating: 1588
| Grand Prix Prague 2017 (AER limited) | starting rating: 1562 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 495 | Muller, Tomas (1500) | Lost 1-2 | -191543 |
| 2sealed | 603 | Talantsev, Vladislav (1481) | Won 2-0 | +161559 |
| 3sealed | 614 | Landvatter, Matthias (1613) | Won 2-0 | +191578 |
| 4sealed | 321 | Kaiser, Fabio (1523) | Won 2-0 | +171595 |
| 5sealed | 286 | Van Kuijk, Harm-Joost (1613) | Lost 1-2 | -171578 |
| 6sealed | 591 | Blumstein, Eduard (1476) | Won 2-0 | +161594 |
| 7sealed | 226 | Fossberg, Marc (1474) | Won 2-1 | +161610 |
| 8sealed | 133 | Prinzell, Johan (1776) | Won 2-1 | +211631 |
| 9sealed | 115 | Dinescu, Fabian (1784) | Lost 0-2 | -161615 |
| 10draft | 245 | Muller, Johannes (1569) | Won 2-0 | +181633 |
| 11draft | 273 | Leigh, Simon (1887) | Lost 1-2 | -141619 |
| 12draft | 286 | Birch, Lars (1872) | Lost 1-2 | -131606 |
| 13draft | 291 | Esser, Ralph (1604) | Lost 0-2 | -181588 |
| top | average opponent: 1629record: 7-6 | new rating: 1588 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 47 | Klavehn, Gordon (1478) | Won 2-1 | +171557 |
| 2standard | 107 | Arabi-Eter, Samir (1532) | Won 2-0 | +171574 |
| 3standard | 276 | Semkin, Alexander (1754) | Draw 1-1 | +41578 |
| 4standard | 175 | Lopez Benito, Borja (1435) | Lost 1-2 | -211557 |
| 5standard | 330 | Amateis, Alessandro (1559) | Won 2-1 | +181575 |
| 6standard | 214 | Vojta, Jakub (1833) | Lost 0-2 | -131562 |
| top | average opponent: 1599record: 3-2-1 | new rating: 1562 | ||
| Grand Prix Utrecht 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1157 | Lajoie, Patrick (1502) | Draw 1-1 | 01500 |
| 2sealed | 1260 | Nienstedt, Urs (1499) | Won 2-1 | +181518 |
| 3sealed | 1240 | Pots, Maurice (1607) | Won 2-1 | +201538 |
| 4sealed | 1123 | Neessen, Coen (1526) | Lost 0-1 | -191519 |
| 5sealed | 1225 | Bachmann, Andreas (1542) | Won 2-0 | +191538 |
| 6sealed | 1141 | Heijne, Pim (1556) | Won 2-0 | +181556 |
| 7sealed | 1088 | Leupold, Kim (1560) | Draw 1-1 | 01556 |
| 8sealed | 1146 | van Montfoort, Kees (1649) | Lost 0-2 | -161540 |
| top | average opponent: 1555record: 4-2-2 | new rating: 1540 | ||