Clark, William C
Current rating: 1536
Record: 5-3-1
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 891 | Roos, Maarten (1476) | Lost 0-2 | -181482 |
| 2legacy | 883 | Goossens, Daisy (1482) | Won 2-0 | +181500 |
| 3legacy | 822 | van den Wouwer, Chris (1529) | Won 2-1 | +181518 |
| 4legacy | 793 | Ruggiu, Gianmaria (1490) | Won 2-1 | +181536 |
| 5legacy | 773 | van der End, Martijn (1540) | Draw 1-1 | 01536 |
| 6legacy | 749 | Gromoff, Quentin (1571) | Won 2-0 | +181554 |
| 7legacy | 678 | Audejean, Vincent (1527) | Lost 1-2 | -181536 |
| 8legacy | 746 | Laurent, Fabien (1535) | Lost 1-2 | -181518 |
| 9legacy | 748 | Jentges, Andreas (1525) | Won 2-0 | +181536 |
| average opponent: 1520record: 5-3-1 | new rating: 1536 | |||