Williams, Erik L
Current rating: 1539
Record: 15-15-1
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 97 | Nguyen, Hai (1500) | Won 2-1 | +181488 |
| 2standard | 135 | Kallahan, Kory (1517) | Won 2-1 | +191507 |
| 3standard | 24 | Ochoa, David (1828) | Won 2-1 | +231530 |
| 4standard | 136 | Bucher, Manuel (1892) | Lost 1-2 | -111519 |
| 5standard | 216 | Conlin, Morgan (1501) | Won 2-0 | +171536 |
| 6standard | 57 | Carr, Aaron (1555) | Won 2-0 | +191555 |
| 7standard | 44 | Sadin, Steven (1593) | Lost 1-2 | -181537 |
| 8standard | 90 | Dalton, Trevor L (1538) | Won 2-1 | +181555 |
| 9standard | 64 | Davis, Chris H (1672) | Lost 0-0 | -161539 |
| top | average opponent: 1622record: 6-3 | new rating: 1539 | ||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1420 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 154 | Paxton, Corey (1460) | Lost 1-2 | -171403 |
| 3extended | 259 | Tangtam, Krisada (1499) | Won 2-0 | +201423 |
| 4extended | 229 | Oseguera, Joseph (1504) | Won 2-0 | +191442 |
| 5extended | 74 | Smith, Alex L (1550) | Won 2-1 | +201462 |
| 6extended | 33 | O'Donnell, Brendan (1744) | Won 2-0 | +231485 |
| 7extended | 39 | Foster, Tucker (1478) | Lost 0-2 | -181467 |
| 8extended | 99 | Duterte, Daniel (1518) | Won 2-1 | +191486 |
| 9extended | 42 | Adams, Jordan (1584) | Lost 1-2 | -161470 |
| top | average opponent: 1542record: 5-3 | new rating: 1470 | ||
| Grand Prix Vancouver 2008 (extended) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 36 | Bleackley, Aaron (1500) | Lost 1-2 | -181451 |
| 5extended | 35 | Giovannetti, Anthony (1536) | Won 2-0 | +201471 |
| 6extended | 20 | Taylor, David (1500) | Lost 1-2 | -181453 |
| 7extended | 73 | Annable, Marcus (1574) | Lost 0-2 | -161437 |
| 8extended | 77 | Parry, Caleb (1471) | Lost 1-2 | -171420 |
| top | average opponent: 1516record: 1-4 | new rating: 1420 | ||
| Grand Prix San Francisco 2007 (Time Spiral block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 224 | Tricarichi, Matthew R (1463) | Draw 1-1 | -11499 |
| 2block | 171 | DiSanto, Nick J (1498) | Won 2-1 | +181517 |
| 3block | 100 | von Beroldingen, Nicholas P (1518) | Lost 1-2 | -181499 |
| 4block | 201 | Landwehr, Aaron (1537) | Won 2-1 | +191518 |
| 5block | 154 | Ramirez, Enrique (1523) | Won 2-1 | +181536 |
| 6block | 103 | Martell, Tom (1674) | Lost 0-2 | -151521 |
| 7block | 140 | Yii, Terh Kuen (1596) | Lost 1-2 | -171504 |
| 8block | 132 | John, Gene r (1517) | Lost 0-2 | -181486 |
| 9block | 112 | titensor, jared (1509) | Lost 0-0 | -171469 |
| top | average opponent: 1537record: 3-5-1 | new rating: 1469 | ||