Kooistra, Frederik
Current rating: 1467
Record: 4-6
| Grand Prix Antwerp 2002 (TOR limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 184 | Van Landeghem, Gunther (1500) | Won 2-0 | +191482 |
| 2sealed | 40 | Kyriazis, Ioannis (1487) | Lost 0-2 | -181464 |
| 3sealed | 186 | Delnatte, Francois (1500) | Won 2-1 | +191483 |
| 4sealed | 125 | Lagas, Joost (1519) | Won 2-0 | +181501 |
| 5sealed | 84 | Breebaart, Take (1500) | Lost 1-2 | -181483 |
| 6sealed | 121 | Stefanovic, Marko (1560) | Lost 1-2 | -161467 |
| average opponent: 1511record: 3-3 | new rating: 1467 | |||
| Grand Prix Amsterdam 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 201 | Roos, Maarten (1483) | Won 2-0 | +181518 |
| 2sealed | 107 | Weinkath, Michael (1500) | Lost 1-2 | -191499 |
| 3sealed | 191 | Gemund, Tobias (1486) | Lost 0-2 | -181481 |
| 4sealed | 225 | Dongstra, Jarno (1482) | Lost 1-2 | -181463 |
| average opponent: 1488record: 1-3 | new rating: 1463 | |||