Helmich, Arnout
Current rating: 1519
Record: 7-6
| Grand Prix Rotterdam 2009 (CON limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 589 | Cheung, Yiu Ting (1484) | Won 2-0 | +181518 |
| 2sealed | 455 | Rupert, Freek (1519) | Lost 0-2 | -181500 |
| 3sealed | 557 | Verschoor, Patrick (1467) | Won 2-0 | +171517 |
| 4sealed | 505 | Deltour, Louis (1484) | Won 2-1 | +181535 |
| 5sealed | 486 | Baum, Tobias (1542) | Won 2-0 | +181553 |
| 6sealed | 462 | Oude Luttikhuis, Maarten (1556) | Won 2-1 | +181571 |
| 7sealed | 449 | Williamson, David [AUS] (1577) | Won 2-1 | +181589 |
| 8sealed | 408 | Doropoulos, Marios-Isidoros (1609) | Won 2-1 | +181607 |
| 9sealed | 411 | de Rooij, Danny (1609) | Lost 0-2 | -181589 |
| 10draft | 18 | Mauger, Guillaume (1578) | Lost 0-2 | -181571 |
| 11draft | 14 | Andersen, Rune Martens (1617) | Lost 1-2 | -171554 |
| 13draft | 70 | van der Beek, Johan (1547) | Lost 1-2 | -181536 |
| 14draft | 48 | Picciafuochi, Riccardo (1586) | Lost 1-2 | -171519 |
| average opponent: 1552record: 7-6 | new rating: 1519 | |||