Grizzelle, Joel
Current rating: 1498
Record: 15-16-1
| Grand Prix Yamagata 2006 (TSP limited) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 63 | Takeuchi, Isao (1518) | Lost 0-2 | -181509 |
| 3sealed | 78 | Koike, Takayuki (1502) | Won 2-0 | +181527 |
| 4sealed | 83 | Okada, Wataru (1665) | Lost 1-2 | -161511 |
| 5sealed | 111 | Marcik, Michal (1792) | Lost 0-2 | -131498 |
| top | average opponent: 1619record: 1-3 | new rating: 1498 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 85 | Napoli, Phillip (1558) | Lost 0-2 | -181543 |
| 2sealed | 165 | Gaudard, Jason (1655) | Lost 1-2 | -161527 |
| top | average opponent: 1606record: 0-2 | new rating: 1527 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1564 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 149 | Brunelle, Adam (1518) | Won 2-0 | +171581 |
| 4block | 4 | Badillo, Rogelio (1537) | Lost 0-2 | -191562 |
| 5block | 75 | Willoughby, Tom (1736) | Won 2-0 | +211583 |
| 6block | 81 | McMath, Tim (1542) | Won 2-1 | +181601 |
| 7block | 40 | Arthurs, Marshall (1458) | Lost 0-2 | -211580 |
| 8block | 115 | Mancuso, Damien (1521) | Lost 0-2 | -191561 |
| top | average opponent: 1552record: 3-3 | new rating: 1561 | ||
| Grand Prix Atlanta 2003 (8ED standard) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 8 | White, Hooskin (1487) | Won 2-1 | +181546 |
| 3standard | 89 | Ikerd, Christopher (1535) | Won 2-1 | +171563 |
| 4standard | 2 | Herberholz, Mark (1701) | Lost 0-2 | -151548 |
| 5standard | 71 | Parker, Alex (1512) | Lost 0-2 | -191529 |
| 6standard | 133 | Wolansky, Steven (1508) | Won 2-1 | +181547 |
| 7standard | 93 | Thomas, Joe (1552) | Draw 1-1 | 01547 |
| 8standard | 80 | Shores, Curt (1487) | Won 2-1 | +171564 |
| top | average opponent: 1540record: 4-2-1 | new rating: 1564 | ||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 37 | Churchill, Michael (1500) | Won 2-0 | +191485 |
| 2sealed | 8 | Riley, Erin (1483) | Lost 0-2 | -181467 |
| 3sealed | 159 | Alderfer, John (1532) | Won 2-1 | +191486 |
| 4sealed | 152 | Schock, Rosco (1472) | Won 2-0 | +181504 |
| 5sealed | 59 | Swan, Thomas (1696) | Won 2-1 | +211525 |
| 6sealed | 46 | Bluett, Taerthrum (1681) | Won 2-0 | +211546 |
| 7sealed | 32 | Lim, Joel (1561) | Lost 1-2 | -181528 |
| top | average opponent: 1561record: 5-2 | new rating: 1528 | ||
| Grand Prix Houston 2002 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 46 | Gilmore, Mike (1521) | Lost 1-2 | -181482 |
| 3extended | 60 | Heldberg, Jeffrey (1499) | Lost 1-2 | -171465 |
| 4extended | 117 | Hamilton, Charles (1482) | Won 2-0 | +181483 |
| 5extended | 77 | Ayala, Feloy (1502) | Lost 0-2 | -181465 |
| 6extended | 83 | Pace, Taylor (1500) | Won 2-1 | +191484 |
| 7extended | 74 | Daniels, Brendan M (1498) | Lost 0-2 | -181466 |
| top | average opponent: 1500record: 2-4 | new rating: 1466 | ||