Knapp, Johnnie C
Current rating: 1487
Record: 2-3-1
| Grand Prix Charleston 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 88 | Meinzer, Joseph (1483) | Won 2-1 | +181518 |
| 5standard | 17 | Pace, Joe (1602) | Lost 0-2 | -171501 |
| 6standard | 54 | Herrera, Joseph (1569) | Won 1-0 | +191520 |
| 7standard | 31 | Ball, Chris K (1539) | Draw 1-1 | +11521 |
| 8standard | 23 | Petitt, Nick (1589) | Lost 0-1 | -171504 |
| 9standard | 67 | Throop, Adrian (1581) | Lost 0-2 | -171487 |
| average opponent: 1560record: 2-3-1 | new rating: 1487 | |||