Rafferty, Zachary
Current rating: 1416
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 324 | Martin, Paul (1513) | Lost 0-0 | -171416 |
| top | record: 0-1 | new rating: 1416 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 747 | Wolf, Andrew (1645) | Lost 0-0 | -151450 |
| 2sealed | 811 | Mades-brown, Timothy (1486) | Lost 0-2 | -171433 |
| top | average opponent: 1566record: 0-2 | new rating: 1433 | ||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 122 | Jarrell, Derek (1558) | Lost 0-2 | -171483 |
| 2sealed | 704 | Ierardi, John (1482) | Lost 1-2 | -181465 |
| 3sealed | 707 | Sobkowicz, Tim (1466) | Won 2-0 | +181483 |
| 4sealed | 723 | Tardy, Don (1483) | Lost 0-2 | -181465 |
| top | average opponent: 1497record: 1-3 | new rating: 1465 | ||