John, Charles o
Current rating: 1495
Record: 4-4
| Grand Prix Columbus 2007 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 6 | Stroup, Jason (1499) | Won 2-0 | +181518 |
| 2legacy | 68 | Simon, Steve (1443) | Won 2-1 | +171535 |
| 3legacy | 37 | Harrelson, Eric W (1539) | Won 2-1 | +181553 |
| 4legacy | 15 | Blystone, Jeff (1518) | Lost 0-2 | -191534 |
| 5legacy | 65 | Bramlett, Nathan (1453) | Won 2-0 | +171551 |
| 6legacy | 44 | Akeley, Peter (1557) | Lost 0-2 | -181533 |
| 7legacy | 85 | Wells, Daniel L (1534) | Lost 1-2 | -181515 |
| 8legacy | 153 | Blyden, Jeffrey (1439) | Lost 0-2 | -201495 |
| average opponent: 1498record: 4-4 | new rating: 1495 | |||