van der Werff, Genaro
Current rating: 1469
Record: 6-8-1
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 254 | Castano, Joan (1490) | Lost 0-2 | -181486 |
| 2extended | 408 | Schwagerle, Gunther (1595) | Lost 0-1 | -161470 |
| 3extended | 428 | Wiersma, Trevor (1464) | Won 2-0 | +181488 |
| 4extended | 392 | Diender, Jeroen (1482) | Won 2-0 | +181506 |
| 5extended | 234 | Jaminon, Cedric (1503) | Lost 0-2 | -181488 |
| 6extended | 329 | Folkertsma, Pieter (1486) | Draw 1-1 | 01488 |
| 7extended | 264 | Hoogendijk, Donald (1482) | Lost 1-2 | -191469 |
| average opponent: 1500record: 2-4-1 | new rating: 1469 | |||
| Grand Prix Brussels 2004 (DST standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 24 | Szafranski, Karol (1431) | Lost 0-2 | -191481 |
| 2standard | 261 | Magera, Markus (1607) | Lost 1-2 | -161465 |
| 3standard | 320 | De Koning, Alex (1465) | Won 2-0 | +181483 |
| 4standard | 275 | Van Lissum, Evan (1435) | Won 2-0 | +171500 |
| 5standard | 192 | Vandenhaute, Eric (1552) | Lost 0-2 | -171483 |
| 6standard | 235 | Cravo, Daniel (1483) | Won 2-0 | +181501 |
| 7standard | 158 | Purcha, Jean-Pierre (1633) | Won 2-1 | +201521 |
| 8standard | 121 | Martineau, Sven (1553) | Lost 0-2 | -171504 |
| average opponent: 1520record: 4-4 | new rating: 1504 | |||