Hakkert, Gert-jan
Current rating: 1445
Record: 1-4
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 534 | Midtun, Walter (1500) | Lost 1-2 | -181482 |
| 2sealed | 597 | Pedoux, Sophie (1413) | Lost 0-2 | -191463 |
| 3sealed | 677 | De Visser, Bas (1464) | Won 2-0 | +181481 |
| 4sealed | 616 | Van Leeuwen, Sweitse J (1482) | Lost 0-2 | -181463 |
| 5sealed | 642 | Tammes, Roeland (1463) | Lost 1-2 | -181445 |
| average opponent: 1464record: 1-4 | new rating: 1445 | |||