Parker, James S
Current rating: 1523
Record: 13-12-2
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 175 | Rojas, Ben (1500) | Won 2-0 | +171542 |
| 2sealed | 158 | Mathis, Jeffrey (1484) | Lost 0-2 | -191523 |
| top | average opponent: 1492record: 1-1 | new rating: 1523 | ||
| Grand Prix San Diego 2013 (modern) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 163 | Wheeler, Jonathan (1549) | Lost 0-2 | -181510 |
| 2modern | 259 | Baxter, Nathan (1507) | Won 2-0 | +181528 |
| 3modern | 137 | Lee, Robert (1517) | Won 2-1 | +181546 |
| 4modern | 207 | Meyer, Ben (1467) | Lost 1-2 | -201526 |
| 5modern | 223 | Pham, John (1485) | Draw 1-1 | 01526 |
| 6modern | 242 | Maranan, Michael (1483) | Won 2-0 | +171543 |
| 7modern | 188 | Liang, Mike (1529) | Won 2-0 | +181561 |
| 8modern | 131 | Tabak, Josh (1631) | Lost 1-2 | -171544 |
| 9modern | 140 | Momerak, Brian (1476) | Lost 1-2 | -191525 |
| top | average opponent: 1516record: 4-4-1 | new rating: 1525 | ||
| Grand Prix Anaheim 2012 (Innistrad block) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 246 | Erik M., (1500) | Won 2-0 | +181501 |
| 2block | 42 | Choi, Daniel (1500) | Won 2-0 | +181519 |
| 3block | 81 | Page, Brian (1672) | Lost 0-2 | -151504 |
| 4block | 165 | Foster, John (1524) | Won 2-1 | +191523 |
| 5block | 176 | Smith, Logan (1532) | Won 2-1 | +181541 |
| 6block | 98 | Jurek, Benjamin (1506) | Won 2-1 | +171558 |
| 7block | 31 | Stapley, Wes (1601) | Draw 1-1 | +11559 |
| 8block | 58 | Chong, Rick (1832) | Lost 0-2 | -131546 |
| 9block | 105 | Satterfield, Robbie (1550) | Lost 0-2 | -181528 |
| top | average opponent: 1580record: 5-3-1 | new rating: 1528 | ||
| Grand Prix San Diego 2011 (ISD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 478 | Cardona, Alejandro (1500) | Won 2-0 | +181518 |
| 2sealed | 514 | Lin, Le (1581) | Lost 1-2 | -171501 |
| 3sealed | 508 | Duncan, Stuart (1500) | Lost 0-2 | -181483 |
| 4sealed | 581 | Skelly, Lee (1465) | Lost 1-2 | -181465 |
| 5sealed | 606 | Palmer, Andrew (1479) | Won 2-0 | +181483 |
| 6sealed | 565 | Hanks, James B (1480) | Won 2-0 | +181501 |
| 7sealed | 527 | Ruz, Walter (1507) | Lost 1-2 | -181483 |
| top | average opponent: 1502record: 3-4 | new rating: 1483 | ||