Jackson, Herbert L
Current rating: 1412
Record: 2-7
| Grand Prix Charlotte 2015 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1023 | Hunt, Joseph (1548) | Lost 1-2 | -171467 |
| 2modern | 944 | Brakenwagen, Vince (1482) | Lost 0-2 | -181449 |
| 3modern | 1095 | Parrott, Kc (1398) | Lost 0-2 | -181431 |
| 4modern | 1141 | Hansen, Doug (1429) | Lost 1-2 | -191412 |
| average opponent: 1464record: 0-4 | new rating: 1412 | |||
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 439 | Godding, Dan (1500) | Won 2-1 | +181518 |
| 2sealed | 304 | Greer, Joseph (1667) | Won 2-1 | +211539 |
| 3sealed | 29 | Moneymaker, Nathan (1512) | Lost 1-2 | -191520 |
| 4sealed | 201 | Chow, Ritchie J (1506) | Lost 1-2 | -181502 |
| 5sealed | 312 | Peters, Joshua (1505) | Lost 1-2 | -181484 |
| average opponent: 1538record: 2-3 | new rating: 1484 | |||