Shafer, Jason
Current rating: 1509
Record: 13-13-1
| Grand Prix Columbus 2016 (legacy) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 329 | Liu, Shanfu (1500) | Lost 0-2 | -191520 |
| 2legacy | 537 | Akers, Jay (1562) | Lost 1-2 | -171503 |
| 3legacy | 800 | Valdez, Kristie (1462) | Won 2-0 | +171520 |
| 4legacy | 766 | Snodgrass, David (1482) | Won 2-1 | +171537 |
| 5legacy | 519 | Graves, Robert (1908) | Lost 0-2 | -111526 |
| 6legacy | 690 | Hafeman, Mike (1579) | Lost 0-2 | -171509 |
| top | average opponent: 1582record: 2-4 | new rating: 1509 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 255 | Buchanan, Kevin (1525) | Lost 0-2 | -181505 |
| 2modern | 782 | Blizzard, Joseph (1447) | Won 2-1 | +171522 |
| 3modern | 672 | Courtney, Rick (1501) | Won 2-0 | +171539 |
| 4modern | 729 | Klingbeil, Richard (1501) | Won 2-1 | +171556 |
| 5modern | 266 | Reed, Raz (1538) | Lost 0-2 | -181538 |
| 6modern | 513 | Zadzilka, Brandon (1466) | Won 2-1 | +171555 |
| 7modern | 488 | Jones, Nathan (1651) | Lost 1-2 | -161539 |
| top | average opponent: 1518record: 4-3 | new rating: 1539 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1034 | McNeill, Kristopher (1500) | Won 2-1 | +181499 |
| 2modern | 892 | Miller, Matthew A (1507) | Draw 1-1 | +11500 |
| 3modern | 868 | Barlow, Jordan (1537) | Won 2-1 | +181518 |
| 4modern | 790 | Morgan, Sean (1725) | Lost 0-2 | -141504 |
| 5modern | 824 | Jarrell, Allen (1517) | Won 2-0 | +181522 |
| 6modern | 754 | Cummings, John (1533) | Lost 0-2 | -181504 |
| 7modern | 704 | Bengermino, Christian (1501) | Won 2-1 | +181522 |
| 8modern | 650 | Amati, Francesco (1517) | Won 2-1 | +181540 |
| 9modern | 604 | Capra, Adam (1558) | Lost 1-2 | -171523 |
| top | average opponent: 1544record: 5-3-1 | new rating: 1523 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 539 | Duvall, Dylan (1500) | Won 2-1 | +181518 |
| 2modern | 46 | King, Ian (1518) | Lost 1-2 | -181500 |
| 3modern | 426 | Ball, Evan (1500) | Won 2-0 | +181518 |
| 4modern | 296 | McCoury, James (1503) | Lost 0-2 | -181500 |
| 5modern | 495 | Funk, Jaelin (1465) | Lost 0-2 | -191481 |
| top | average opponent: 1497record: 2-3 | new rating: 1481 | ||