Ridall, Jack
Current rating: 1517
Record: 6-5-1
| Grand Prix Atlantic City 2013 (RTR standard) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 280 | Gervato, Matthew (1511) | Lost 0-2 | -181479 |
| 2standard | 585 | Marmo, Timothy (1482) | Won 2-0 | +181497 |
| 3standard | 519 | Oppenheimer, Dave M (1487) | Lost 0-2 | -181479 |
| 4standard | 657 | Hakakian, Joshua (1663) | Won 2-0 | +221501 |
| 5standard | 414 | Frier, Dov (1490) | Won 2-1 | +171518 |
| 6standard | 468 | Styles, Mark (1450) | Won 2-1 | +171535 |
| 7standard | 167 | PROSKUROVSKY, EUGENE (1533) | Lost 1-2 | -181517 |
| average opponent: 1516record: 4-3 | new rating: 1517 | |||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 736 | James L., (1500) | Draw 0-0 | 01500 |
| 2sealed | 745 | Klotz, Paul (1499) | Lost 0-2 | -181482 |
| 3sealed | 869 | Ennis, Keith (1480) | Won 2-0 | +181500 |
| 4sealed | 812 | Williamson, Michael (1472) | Won 2-0 | +171517 |
| 5sealed | 712 | Ali, Rebecca (1389) | Lost 1-2 | -201497 |
| average opponent: 1468record: 2-2-1 | new rating: 1497 | |||