Boyson, Jonathan
Current rating: 1502
Record: 5-5
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 239 | Lindy, Jacob (1566) | Lost 0-2 | -161466 |
| 2sealed | 593 | Gang, Joshua (1481) | Lost 1-2 | -181448 |
| 3sealed | 779 | Smith, Bryan (1397) | Won 2-0 | +171465 |
| 4sealed | 589 | Boyzuck II, Timothy (1483) | Won 2-0 | +181483 |
| 5sealed | 640 | Rock, Stephen (1506) | Won 2-1 | +191502 |
| 6sealed | 398 | Sherman, Justin (1519) | Won 2-0 | +181520 |
| 7sealed | 191 | Dixon, Jack (1539) | Lost 0-2 | -181502 |
| average opponent: 1499record: 4-3 | new rating: 1502 | |||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 241 | Watts, Jay (1500) | Won 2-1 | +181518 |
| 2block | 198 | Bernard, Leif (1518) | Lost 0-2 | -181500 |
| 3block | 251 | Allen, Keith (1500) | Lost 1-2 | -181482 |
| average opponent: 1506record: 1-2 | new rating: 1482 | |||