De Jong, Jeroen
Current rating: 1381
Record: 1-8
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 1 | Jassi, Jaron (1572) | Won 2-0 | +201449 |
| 2standard | 241 | Rempel, Peter (1601) | Lost 0-2 | -151434 |
| 3standard | 484 | Jonas, Jeff (1307) | Lost 0-2 | -201414 |
| 4standard | 546 | Hubert, Henri (1464) | Lost 1-2 | -171397 |
| 5standard | 568 | Van Lierde, Joachim (1512) | Lost 0-2 | -161381 |
| average opponent: 1491record: 1-4 | new rating: 1381 | |||
| Grand Prix Brussels 2015 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 408 | van Netten, Ilja (1603) | Lost 0-0 | -161484 |
| 2standard | 546 | Gheyle, Stijn (1482) | Lost 0-0 | -181466 |
| 3standard | 909 | Van De Gevel, Axel (1414) | Lost 1-2 | -191447 |
| 4standard | 898 | Grootjans, Damian (1446) | Lost 0-2 | -181429 |
| average opponent: 1486record: 0-4 | new rating: 1429 | |||