Segmiller, William
Current rating: 1526
Record: 16-15
| Grand Prix San Diego 2013 (modern) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 2 | Tabor, Matthew (1490) | Won 2-1 | +181488 |
| 2modern | 46 | Hodges, James (1517) | Lost 0-2 | -171471 |
| 3modern | 187 | Smith, Noah (1463) | Won 2-1 | +171488 |
| 4modern | 231 | Dukes, Stephen (1522) | Lost 1-2 | -171471 |
| 5modern | 294 | Shih, Michael (1450) | Won 2-0 | +181489 |
| 6modern | 223 | Bugarin, William (1531) | Lost 1-2 | -181471 |
| 7modern | 227 | Kinney, Avery (1498) | Won 2-0 | +191490 |
| 8modern | 149 | Petuya, Anthony (1547) | Won 2-1 | +191509 |
| 9modern | 135 | Laub, Brian (1481) | Won 2-0 | +171526 |
| top | average opponent: 1500record: 6-3 | new rating: 1526 | ||
| Grand Prix Denver 2013 (legacy) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 201 | Battle, Benjamin R (1472) | Lost 0-2 | -171450 |
| 2legacy | 189 | Rogers, Joshua (1479) | Lost 0-2 | -181432 |
| 3legacy | 280 | Copeigns, Lynsey (1464) | Won 2-1 | +191451 |
| 4legacy | 249 | Felber, Jonathan (1483) | Won 2-1 | +181469 |
| 5legacy | 222 | Buckley, Patrick (1499) | Won 2-0 | +191488 |
| 6legacy | 182 | Husasaber, Rob (1506) | Lost 1-2 | -181470 |
| 7legacy | 184 | Maurice, Lucien (1517) | Lost 1-2 | -171453 |
| 8legacy | 177 | Morgan, Tyler (1381) | Won 2-0 | +171470 |
| top | average opponent: 1475record: 4-4 | new rating: 1470 | ||
| Grand Prix Anaheim 2012 (Innistrad block) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 86 | Loomis, Dallan (1641) | Won 2-1 | +211503 |
| 2block | 173 | Bird, Zach (1517) | Lost 0-2 | -181485 |
| 3block | 280 | Pool, Carmelo (1465) | Lost 0-2 | -181467 |
| 4block | 380 | Marklyn, Tyler (1482) | Won 2-1 | +181485 |
| 5block | 284 | SHELDON, ANDREW (1500) | Lost 0-2 | -181467 |
| top | average opponent: 1521record: 2-3 | new rating: 1467 | ||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 56 | Gonzalez, Migueluis (1500) | Won 2-0 | +181518 |
| 2extended | 174 | Renderos, Claro (1500) | Lost 1-2 | -181500 |
| 3extended | 164 | Ward, Nathan (1526) | Lost 1-2 | -181482 |
| 4extended | 360 | McWilliams, Nathan (1483) | Won 2-0 | +181500 |
| 5extended | 228 | Vitullo, Joshua (1494) | Lost 0-2 | -181482 |
| 6extended | 267 | Rodgers, Dave (1484) | Won 2-0 | +181500 |
| 7extended | 208 | Layne, Zachary (1501) | Lost 0-2 | -181482 |
| 8extended | 166 | gallagher, nick (1485) | Lost 1-2 | -181464 |
| 9extended | 133 | Lyon, Fredrik (1466) | Won 2-0 | +181482 |
| top | average opponent: 1493record: 4-5 | new rating: 1482 | ||