Seidman, Max
Current rating: 1449
Record: 6-9
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 489 | Baker, Kathy (1500) | Won 2-0 | +181502 |
| 2sealed | 533 | Johnson, Brendon (1518) | Lost 0-2 | -181484 |
| 3sealed | 587 | Bertone, Christopher (1464) | Lost 1-2 | -181466 |
| 4sealed | 715 | Wilson, Dillon (1483) | Lost 1-2 | -181448 |
| 5sealed | 683 | Wright, Lancelot (1464) | Won 2-0 | +191467 |
| 6sealed | 621 | Williams, Albert (1482) | Lost 0-2 | -181449 |
| average opponent: 1485record: 2-4 | new rating: 1449 | |||
| Grand Prix Boston 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 171 | Portizo, Jason (1500) | Won 2-1 | +181518 |
| 2extended | 174 | Noble, Mike (1483) | Lost 1-2 | -191499 |
| 3extended | 131 | Richardson, Jason (1483) | Lost 0-2 | -181481 |
| 4extended | 234 | Webster, Alan (1502) | Won 2-0 | +181499 |
| 5extended | 215 | Kastle, Darwin (1631) | Won 2-1 | +211520 |
| 6extended | 124 | Haugh, Zach (1520) | Lost 1-2 | -181502 |
| 7extended | 166 | Wong, Wesley (1499) | Lost 1-2 | -181484 |
| 8extended | 132 | Feehan, Matt (1482) | Won 2-0 | +181502 |
| 9extended | 93 | Paruntu, Yohanes (1500) | Lost 0-2 | -181484 |
| average opponent: 1511record: 4-5 | new rating: 1484 | |||