Duff, James
Current rating: 1498
| Grand Prix Birmingham 2018 (leg) (legacy) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 315 | Eid, Jan (1502) | Won 2-1 | +191466 |
| 2legacy | 135 | Aliyev, Taghi (1479) | Lost 1-2 | -181448 |
| 3legacy | 437 | Berukof, Ilja (1505) | Won 2-1 | +191467 |
| 4legacy | 205 | Overgaauw, Rens (1770) | Won 2-1 | +231490 |
| 5legacy | 109 | Ketels, Frederik (1601) | Won 2-1 | +211511 |
| 6legacy | 155 | Grupp, Momme (1738) | Lost 0-2 | -141497 |
| 7legacy | 112 | Valcke, Michiel (1572) | Lost 0-2 | -171480 |
| 8legacy | 237 | Woodrow, Ruth (1490) | Won 2-1 | +181498 |
| top | average opponent: 1582record: 5-3 | new rating: 1498 | ||
| Grand Prix Liverpool 2015 (FRF limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 318 | Chapman, Jonny (1663) | Lost 1-2 | -151484 |
| 2sealed | 511 | Dodd, Johnathon (1444) | Lost 1-2 | -191465 |
| 3sealed | 773 | Atherton, Robert (1465) | Lost 1-2 | -181447 |
| top | average opponent: 1524record: 0-3 | new rating: 1447 | ||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 121 | Murray, David (1544) | Won 2-0 | +191519 |
| 2block | 121 | Harris, Toby (1450) | Lost 0-2 | -191500 |
| 3block | 680 | Gibson, Matthew (1465) | Won 2-1 | +171517 |
| 4block | 392 | Biddle, Aaron (1490) | Lost 0-2 | -191498 |
| 5block | 405 | Welch, Paul (1503) | Won 2-0 | +191517 |
| 6block | 317 | Black, Dylan (1523) | Lost 0-2 | -181499 |
| top | average opponent: 1496record: 3-3 | new rating: 1499 | ||