Posthuma, Tom
Current rating: 1539
Record: 5-3-1
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 247 | Rospir, Edu (1511) | Won 2-1 | +181518 |
| 2legacy | 58 | Schoorl, Kris (1518) | Won 2-1 | +181536 |
| 3legacy | 88 | Lesieur, Raphael (1558) | Lost 1-2 | -171519 |
| 4legacy | 274 | Pape, Frederik (1495) | Won 2-1 | +171536 |
| 5legacy | 165 | Mar, Tomas (1484) | Lost 1-2 | -191517 |
| 6legacy | 180 | Opatti, Matteo (1571) | Won 2-0 | +191536 |
| 7legacy | 101 | Dierbach, Patrick (1627) | Lost 0-2 | -161520 |
| 8legacy | 162 | Balcells, Josep (1594) | Draw 1-1 | +11521 |
| 9legacy | 150 | Van Zutphen, Timothy (1518) | Won 2-0 | +181539 |
| average opponent: 1542record: 5-3-1 | new rating: 1539 | |||