De Witt, Klass
Current rating: 1507
Record: 16-17-1
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 351 | Juraschek, Timo (1634) | Lost 0-2 | -171544 |
| 4sealed | 678 | Profeanu, Radu (1512) | Lost 1-2 | -181526 |
| 5sealed | 665 | Still, Jeff (1486) | Lost 1-2 | -191507 |
| top | average opponent: 1544record: 0-3 | new rating: 1507 | ||
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 137 | Muravev, Mikhail (1517) | Lost 0-2 | -181524 |
| 3standard | 346 | Kisse, Martin (1496) | Lost 0-2 | -191505 |
| 4standard | 535 | Truchado, Rafael (1511) | Lost 1-2 | -171488 |
| 5standard | 514 | Falkner, Achim (1475) | Won 2-0 | +171505 |
| 6standard | 485 | Axelson, Oskar (1492) | Won 2-1 | +181523 |
| 7standard | 378 | Laub, Brian (1565) | Won 2-1 | +191542 |
| 8standard | 317 | Wagenhofer, Martin (1391) | Won 2-1 | +151557 |
| 9standard | 190 | Lozowitskiy, Stanislaw (1555) | Won 2-0 | +181575 |
| 10standard | 163 | Jonsson, Peter (1642) | Lost 1-2 | -171558 |
| 11standard | 161 | Rubin, Sam (1530) | Lost 0-2 | -181540 |
| 12standard | 169 | Murray, Alex (1491) | Lost 0-2 | -191521 |
| 13standard | 169 | Cassini, Gregory (1624) | Won 2-0 | +201541 |
| 14standard | 161 | Oliveros, Carlos (1736) | Won 2-0 | +211562 |
| 15standard | 142 | Achim, Cosmin (1495) | Draw 1-1 | -11561 |
| top | average opponent: 1537record: 7-6-1 | new rating: 1561 | ||
| Grand Prix Amsterdam 2017 (AKH standard) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 50 | Schutte, Soren (1415) | Won 2-1 | +161550 |
| 3standard | 171 | Meijer, Ben (1488) | Won 2-0 | +171567 |
| 4standard | 27 | Galopa, Etienne (1629) | Lost 1-2 | -171550 |
| 5standard | 145 | Bardini, Alain (1936) | Won 2-1 | +241574 |
| 6standard | 169 | Helfer, Alexander (1575) | Won 2-1 | +181592 |
| 7standard | 28 | Gruber, Klaas (1777) | Lost 1-2 | -141578 |
| 8standard | 130 | Takano, Masahiro (1590) | Lost 0-2 | -181560 |
| 9standard | 178 | Rachenne, Romain (1585) | Lost 1-2 | -181542 |
| top | average opponent: 1624record: 4-4 | new rating: 1542 | ||
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 83 | Luyten, Jordy (1428) | Won 2-0 | +171517 |
| 2standard | 267 | Hahn, Maximilian (1566) | Won 2-0 | +191536 |
| 3standard | 282 | Leigh, Simon (1957) | Won 2-0 | +251561 |
| 4standard | 66 | Crouzet, Cyril (1666) | Won 2-1 | +201581 |
| 5standard | 34 | de Togni, Marco (1801) | Lost 1-2 | -141567 |
| 6standard | 171 | Russett, Charles (1745) | Lost 0-2 | -151552 |
| 7standard | 175 | Lucassen, Henk (1545) | Lost 0-2 | -181534 |
| 8standard | 297 | Rogiers, Nick (1458) | Won 2-0 | +161550 |
| 9standard | 158 | Guglielmini, Enrico (1627) | Lost 0-2 | -161534 |
| top | average opponent: 1644record: 5-4 | new rating: 1534 | ||