Twiddy, Jim
Current rating: 1402
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 141 | Acuna, Martin (1520) | Won 2-0 | +201451 |
| 2standard | 228 | Ceol, Jarrod (1632) | Lost 1-2 | -151436 |
| 3standard | 524 | Sarver, Cory (1486) | Lost 1-2 | -171419 |
| 4standard | 575 | Sanders, Blake (1482) | Lost 1-2 | -171402 |
| top | average opponent: 1530record: 1-3 | new rating: 1402 | ||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 62 | Zeiler, Daniel (1521) | Lost 0-2 | -171448 |
| 2standard | 420 | Whitmore, Chad (1482) | Lost 0-2 | -171431 |
| top | average opponent: 1502record: 0-2 | new rating: 1431 | ||
| Grand Prix Charlotte 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 612 | Cohen, Brendan (1546) | Lost 0-2 | -171483 |
| 2modern | 891 | Woodard, Michael (1481) | Won 2-1 | +181501 |
| 3modern | 832 | Azaret, David (1545) | Lost 0-2 | -171484 |
| 4modern | 853 | Campbell, Cody Lee (1471) | Lost 0-2 | -191465 |
| top | average opponent: 1511record: 1-3 | new rating: 1465 | ||