Blumfield, Jack
Current rating: 1436
Record: 4-8
| Grand Prix Liverpool 2015 (FRF limited) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 560 | Blomdahl, Christoffer (1500) | Lost 0-2 | -171409 |
| 2sealed | 624 | Wellens, Wilson (1617) | Won 2-0 | +221431 |
| 3sealed | 432 | Lock, Daniel (1441) | Won 2-1 | +181449 |
| 4sealed | 320 | Butler, Jonathan (1517) | Won 2-1 | +191468 |
| 5sealed | 289 | Crawford, Stuart (1532) | Lost 0-2 | -171451 |
| 6sealed | 414 | Harvey, Dominic (1626) | Lost 1-2 | -151436 |
| average opponent: 1539record: 3-3 | new rating: 1436 | |||
| Grand Prix London 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 472 | Rey, Stephan (1559) | Lost 0-2 | -171483 |
| 2sealed | 696 | Tingey, Alexi (1483) | Lost 0-2 | -181465 |
| 3sealed | 791 | Millidonis, Theodoros (1469) | Lost 0-2 | -181447 |
| 4sealed | 913 | Eade, Jon (1445) | Won 2-0 | +181465 |
| 5sealed | 793 | Allen, Tim (1334) | Lost 0-2 | -201445 |
| 6sealed | 711 | Binks, Mike (1379) | Lost 1-2 | -191426 |
| average opponent: 1445record: 1-5 | new rating: 1426 | |||