Verdonck, Jean Francois
Current rating: 1464
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 285 | Ehrlich, Joshua (1518) | Won 2-0 | +191475 |
| 2standard | 198 | Smaranda, Adrian (1658) | Lost 0-2 | -141461 |
| 3standard | 495 | Degryse, Laurent (1430) | Lost 1-2 | -191442 |
| 4standard | 609 | Lasson, Marc (1503) | Won 2-0 | +191461 |
| 5standard | 465 | Alla, Stephan (1422) | Won 2-0 | +171478 |
| 6standard | 227 | Langan, Miguel (1673) | Lost 0-2 | -141464 |
| top | average opponent: 1534record: 3-3 | new rating: 1464 | ||
| Grand Prix Lyon 2018 (modern) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 414 | Kong, Jean-Christophe (1520) | Lost 1-2 | -181478 |
| 2modern | 819 | Todisco, Giovanni (1482) | Lost 1-2 | -181460 |
| 3modern | 1014 | Herr, Boris (1256) | Won 2-1 | +141474 |
| 4modern | 734 | Bepperling, Timon (1455) | Lost 0-2 | -181456 |
| top | average opponent: 1428record: 1-3 | new rating: 1456 | ||
| Grand Prix Lille 2012 (DKA standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 152 | Baister, Mark (1500) | Lost 1-2 | -191500 |
| 2standard | 248 | De Smet, Anton (1323) | Lost 1-2 | -211479 |
| 3standard | 302 | Tomko, Jaroslav (1409) | Won 2-0 | +171496 |
| 4standard | 335 | Willocq, Michael (1485) | Won 2-0 | +181514 |
| 5standard | 237 | Tetaert, Fred M (1518) | Lost 0-2 | -181496 |
| top | average opponent: 1447record: 2-3 | new rating: 1496 | ||
| Grand Prix Paris 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 8 | Fonteyne, Aron (1500) | Won 2-1 | +181518 |
| 2sealed | 63 | Geschwind, Ken (1550) | Lost 1-2 | -171501 |
| 3sealed | 134 | Luttenschlager, Arnaud (1500) | Won 2-1 | +181519 |
| 4sealed | 177 | Catherine, Theo (1518) | Won 2-1 | +181537 |
| 5sealed | 94 | Uguen, Gabriel (1536) | Lost 0-2 | -181519 |
| top | average opponent: 1521record: 3-2 | new rating: 1519 | ||