Duffy, Patrick
Current rating: 1546
Record: 5-3
| Grand Prix Hartford 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 189 | Kanwar, Satjiv (1558) | Won 2-0 | +191519 |
| 2modern | 186 | Strong, Tom (1902) | Lost 1-2 | -111508 |
| 3modern | 671 | Evans, Matthew (1467) | Lost 1-2 | -191489 |
| 4modern | 608 | Roy, Jeremiah (1490) | Won 2-1 | +181507 |
| 5modern | 664 | Savarin, Billy (1558) | Lost 1-2 | -171490 |
| 6modern | 597 | Singer, Sean (1648) | Won 2-0 | +211511 |
| 7modern | 484 | Perrotta, Brendan (1478) | Won 2-0 | +171528 |
| 8modern | 296 | Burnham, Ross (1520) | Won 2-1 | +181546 |
| average opponent: 1578record: 5-3 | new rating: 1546 | |||