Pennachi, Fredrick
Current rating: 1522
Record: 5-4
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 307 | Ewing, Joseph (1544) | Lost 0-2 | -171483 |
| 2sealed | 647 | Clarizio, Robert (1483) | Lost 1-2 | -181465 |
| 3sealed | 702 | White, Corey (1464) | Lost 1-2 | -181447 |
| 4sealed | 816 | Gorenburg, Jacob (1448) | Won 2-0 | +181465 |
| 5sealed | 725 | Sullivan, Patrick (1718) | Won 2-0 | +221487 |
| 6sealed | 539 | Mueller, Christina (1484) | Won 2-1 | +181505 |
| 7sealed | 453 | McGuire, Christopher (1468) | Lost 1-2 | -181487 |
| 8sealed | 390 | Wetmore, Tyler (1484) | Won 2-0 | +181505 |
| 9sealed | 288 | Chou, Willis (1493) | Won 2-0 | +171522 |
| average opponent: 1509record: 5-4 | new rating: 1522 | |||