Johnson, Joey Z
Current rating: 1520
Record: 4-3
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 812 | Amati, Francesco (1500) | Lost 0-2 | -181482 |
| 2modern | 1054 | Moyer, Ian (1482) | Won 2-0 | +181500 |
| 3modern | 988 | Dorman, Edward (1505) | Won 2-1 | +181518 |
| 4modern | 877 | Howard, Justin (1501) | Lost 1-2 | -181500 |
| 5modern | 881 | Neighbors, Jacob (1589) | Lost 1-2 | -171483 |
| 6modern | 952 | Martin, Keith (1528) | Won 2-0 | +191502 |
| 7modern | 750 | McMicheaux, Zach (1507) | Won 2-0 | +181520 |
| average opponent: 1516record: 4-3 | new rating: 1520 | |||