Duffy, Peter
Current rating: 1485
Record: 3-4
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 752 | Oddy, Graeme (1604) | Lost 0-2 | -161484 |
| 2modern | 1005 | Burns, Jeffrey (1576) | Lost 1-2 | -161468 |
| 3modern | 1200 | Dumais, Dominic (1505) | Won 2-1 | +181486 |
| 4modern | 1112 | Williams, Ashley (1467) | Won 2-0 | +181504 |
| 5modern | 1097 | Martin, Cory (1489) | Won 2-0 | +181522 |
| 6modern | 925 | [anonymous] | Lost 1-2 | -191503 |
| 7modern | 957 | Kimmel, Ben (1502) | Lost 0-2 | -181485 |
| average opponent: 1521record: 3-4 | new rating: 1485 | |||