Hebert, Carl
Current rating: 1543
| Grand Prix Boston 2005 (extended) | starting rating: 1551 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 44 | Roiter, Andrew (1500) | Draw 1-1 | -11550 |
| 2extended | 189 | Cole, Phil (1482) | Lost 1-2 | -191531 |
| 3extended | 262 | Kolodziej, Matthew (1501) | Won 2-0 | +171548 |
| 4extended | 219 | McWhaw, Andrew (1519) | Draw 1-1 | 01548 |
| 5extended | 239 | Nicholson, John (1399) | Won 2-0 | +151563 |
| 6extended | 183 | Long, Noah (1518) | Draw 1-1 | -11562 |
| 7extended | 148 | Denham, Matthew (1500) | Lost 0-2 | -191543 |
| top | average opponent: 1488record: 2-2-3 | new rating: 1543 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 290 | Wolf, Jon (1500) | Won 2-0 | +171553 |
| 2block | 112 | Hakulin, Howard (1500) | Won 2-1 | +171570 |
| 3block | 19 | Powelson, Jeff (1541) | Lost 0-2 | -181552 |
| 4block | 140 | Xu, Jimmy (1518) | Won 2-0 | +171569 |
| 5block | 71 | Piekarski, Chris (1552) | Lost 1-2 | -181551 |
| 6block | 158 | Santiago, Angelo (1553) | Lost 0-2 | -181533 |
| 7block | 219 | Zidek, Steve (1468) | Won 2-1 | +161549 |
| 8block | 195 | Moore, Jeremy (1620) | Won 2-1 | +201569 |
| 9block | 138 | Thompson, Mike (1583) | Lost 0-2 | -181551 |
| top | average opponent: 1537record: 5-4 | new rating: 1551 | ||
| Grand Prix Washington DC 1999 (UDS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 84 | Koth, Ted (1500) | Draw 0-0 | 01500 |
| 2sealed | 107 | Parodi, Tony (1500) | Lost 0-0 | -181482 |
| 3sealed | 165 | Odom, Tim (1482) | Won 0-0 | +181500 |
| 4sealed | 141 | Bigg, Gillian (1500) | Won 0-0 | +181518 |
| 5sealed | 110 | Crenshaw, Bedford (1501) | Won 0-0 | +181536 |
| 6sealed | 61 | Kortyny, Eugene (1536) | Won 0-0 | +181554 |
| 7sealed | 43 | Chin, Jason (1553) | Lost 0-0 | -181536 |
| top | average opponent: 1510record: 4-2-1 | new rating: 1536 | ||