Shaffer, Isaac S
Current rating: 1558
Record: 6-3
| Grand Prix Nashville 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 87 | Jamison, Bill (1500) | Won 2-0 | +181518 |
| 2sealed | 239 | Phillips, Jon B (1518) | Won 2-1 | +181536 |
| 3sealed | 105 | Holliday, John (1518) | Lost 0-2 | -181518 |
| 4sealed | 327 | Eltarhoni, Adam (1527) | Won 2-1 | +181536 |
| 5sealed | 159 | Toth, Tom (1535) | Won 2-1 | +181554 |
| 6sealed | 153 | Ellwood, David (1523) | Lost 0-2 | -191535 |
| 7sealed | 192 | Pearce, Matthew (1573) | Won 2-0 | +191554 |
| 8sealed | 117 | West, Alexander (1836) | Lost 1-2 | -131541 |
| 9sealed | 148 | Gregersen, Ryan (1507) | Won 2-0 | +171558 |
| average opponent: 1560record: 6-3 | new rating: 1558 | |||