Van Katwijk, Jorg
Current rating: 1527
Record: 7-6-1
| Grand Prix Brussels 2018 (M19 standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 38 | Schietgat, Renzo (1512) | Won 2-0 | +191502 |
| 2standard | 41 | Robinson, Ross (1483) | Won 2-1 | +171519 |
| 3standard | 60 | Kreutz, Stefan (1484) | Won 2-0 | +181537 |
| 4standard | 99 | Lipicki, Jacek (1538) | Lost 0-2 | -181519 |
| 5standard | 181 | Scharr, Jules (1415) | Won 2-1 | +161535 |
| 6standard | 77 | Korevaar, Martijn (1671) | Lost 0-2 | -161519 |
| 7standard | 192 | Brendemuhl, Bernd (1667) | Won 2-1 | +211540 |
| 8standard | 77 | van Ravenzwaaij, Don (1813) | Lost 1-2 | -131527 |
| average opponent: 1573record: 5-3 | new rating: 1527 | |||
| Grand Prix Utrecht 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 38 | Marty, Toni (1500) | Won 2-0 | +181518 |
| 2standard | 248 | Schwarz, Christoph (1526) | Draw 1-1 | 01518 |
| 3standard | 309 | Hasselhorst, Marcel (1631) | Lost 1-2 | -161502 |
| 4standard | 424 | Moittie, Cyril (1364) | Won 2-1 | +161518 |
| 5standard | 302 | Giorgetti, Cesare (1518) | Lost 1-2 | -181500 |
| 6standard | 405 | Rapanovich, Yauhen (1573) | Lost 0-2 | -171483 |
| average opponent: 1519record: 2-3-1 | new rating: 1483 | |||