Semmelrock, Joseph
Current rating: 1463
| Grand Prix Philadelphia 2005 (legacy) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 18 | Michel, Frederick (1500) | Lost 0-2 | -181481 |
| 2legacy | 161 | Carroll, Ryan R (1481) | Lost 0-2 | -181463 |
| 3legacy | 196 | Ho, Kenneth (1464) | Won 2-0 | +181481 |
| 4legacy | 162 | Chen, Eunice (1483) | Lost 0-2 | -181463 |
| 5legacy | 193 | Johnson, Ryan (1420) | Won 2-0 | +181481 |
| 6legacy | 165 | Gildea, Robert (1516) | Lost 1-2 | -181463 |
| 7legacy | 140 | Gonzalvo, Stevenson (1444) | Won 2-0 | +181481 |
| 8legacy | 109 | Willis, Shon (1483) | Lost 1-2 | -181463 |
| top | average opponent: 1474record: 3-5 | new rating: 1463 | ||
| Grand Prix Boston 2005 (extended) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 168 | Hylan, Nathan (1500) | Won 2-0 | +181519 |
| 2extended | 127 | Cooper, Matt (1622) | Won 2-0 | +201539 |
| 3extended | 74 | Sanguinetti, James (1492) | Lost 1-2 | -191520 |
| 4extended | 142 | Lyons, Paul (1514) | Lost 0-2 | -181502 |
| 5extended | 236 | Brown, Jason (1420) | Lost 1-2 | -201482 |
| 6extended | 202 | Luciany, Anthony (1482) | Won 2-1 | +181500 |
| 7extended | 147 | Snyder, Joseph (1500) | Won 2-0 | +181518 |
| 8extended | 109 | Hetherington, Michael (1472) | Lost 1-2 | -191499 |
| top | average opponent: 1500record: 4-4 | new rating: 1499 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 51 | Mays, Rich (1452) | Won 2-0 | +171517 |
| 2block | 208 | Jones, Kevin (1516) | Won 2-0 | +181535 |
| 3block | 44 | Schock, Rosco (1492) | Lost 1-2 | -191516 |
| 4block | 228 | Leader-Smith, Alex (1605) | Lost 0-2 | -161500 |
| 5block | 329 | Moore, Devon (1561) | Won 2-0 | +191519 |
| 6block | 153 | Han, William (1502) | Lost 0-2 | -181501 |
| top | average opponent: 1521record: 3-3 | new rating: 1501 | ||