Croes, Ben
Current rating: 1466
Record: 4-6
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 12 | Piela, Ben (1521) | Won 2-1 | +181517 |
| 3sealed | 63 | Marshall, Shawn (1473) | Lost 0-2 | -181499 |
| 4sealed | 153 | Shiels, David (1672) | Lost 0-2 | -151484 |
| 5sealed | 217 | Higgins, Tyler (1500) | Lost 1-2 | -181466 |
| average opponent: 1542record: 1-3 | new rating: 1466 | |||
| Grand Prix Boston 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 49 | Jack, Nathaniel (1500) | Lost 0-2 | -181482 |
| 2extended | 206 | Hooker, Justin (1464) | Won 2-0 | +181500 |
| 3extended | 231 | March, Devyn (1537) | Won 2-1 | +181518 |
| 4extended | 133 | Brown, Jason (1437) | Won 2-0 | +171535 |
| 5extended | 75 | Schwartz, Stephen (1542) | Lost 1-2 | -181517 |
| 6extended | 175 | Camacho, Alejandro (1519) | Lost 0-2 | -181499 |
| average opponent: 1500record: 3-3 | new rating: 1499 | |||