Roberts, Jonny
Current rating: 1580
Record: 12-8
| Grand Prix Liverpool 2015 (FRF limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 485 | Waite, Alex (1500) | Lost 0-2 | -181464 |
| 2sealed | 576 | Ramsay, Adam [ENG] (1479) | Won 2-0 | +181482 |
| 3sealed | 481 | Gibbs, Ashley (1501) | Won 2-1 | +191501 |
| 4sealed | 285 | McIntosh, Stephen (1576) | Won 2-0 | +191520 |
| 5sealed | 124 | Van Rooij, Peter (1375) | Won 2-0 | +151535 |
| 6sealed | 165 | Knellwolf, Martin (1689) | Won 2-0 | +211556 |
| 7sealed | 71 | Ferguson, Marc (1584) | Won 2-1 | +191575 |
| 8sealed | 38 | Glenister, Mark (1804) | Won 2-0 | +221597 |
| 9sealed | 41 | Ballanger, Stuart (1613) | Lost 1-2 | -181579 |
| 10draft | 35 | Warden, Graeme (1579) | Lost 0-2 | -181561 |
| 11draft | 65 | Thompson, Ashley (1566) | Won 2-1 | +181579 |
| 12draft | 63 | Belasta, Matej (1531) | Lost 0-2 | -191560 |
| 13draft | 80 | Cestaro, Laurent (1690) | Won 2-1 | +211581 |
| 14draft | 20 | Conti, Francesca (1591) | Won 2-1 | +181599 |
| 15draft | 44 | Naujokat, Ricardo (1551) | Lost 1-2 | -191580 |
| average opponent: 1575record: 10-5 | new rating: 1580 | |||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 479 | Bennett, Nicholas [ENG] (1500) | Lost 1-2 | -181482 |
| 2block | 482 | Sandham, Alex (1482) | Won 2-0 | +181500 |
| 3block | 456 | Swanljung, Klas (1501) | Lost 1-2 | -181482 |
| 4block | 496 | Keohane, Lawrence (1418) | Won 2-1 | +171499 |
| 5block | 403 | Blake, Kevin (1547) | Lost 1-2 | -171482 |
| average opponent: 1490record: 2-3 | new rating: 1482 | |||