Mansfield, Joseph
Current rating: 1448
Record: 4-7
| Grand Prix Charlotte 2016 (modern) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 160 | Moyer, Travis (1518) | Lost 0-2 | -171463 |
| 2modern | 814 | Smith, Benjamin (1596) | Lost 0-2 | -161447 |
| 3modern | 1021 | Moll, Louis (1449) | Won 2-1 | +181465 |
| 4modern | 1156 | Holdren, Benjamin (1478) | Lost 1-2 | -171448 |
| average opponent: 1510record: 1-3 | new rating: 1448 | |||
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 62 | Larkin, Brandon (1516) | Lost 1-2 | -181482 |
| 2modern | 533 | Gibson, G. W. (1403) | Lost 1-2 | -191463 |
| 3modern | 540 | Pennington, Richard (1465) | Won 0-0 | +181481 |
| 4modern | 410 | Kuch, Kanon (1483) | Won 2-1 | +181499 |
| 5modern | 295 | Biala, Lito (1485) | Won 2-1 | +181517 |
| 6modern | 331 | Anderson, Kyle (1489) | Lost 0-2 | -191498 |
| 7modern | 314 | Lamb, Jesse (1506) | Lost 1-2 | -181480 |
| average opponent: 1478record: 3-4 | new rating: 1480 | |||