Marking, John
Current rating: 1486
Record: 2-3
| Grand Prix Kansas City 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 34 | H992, Charlie R (1500) | Lost 0-2 | -181482 |
| 2modern | 293 | Evans, Eric (1481) | Lost 0-2 | -181464 |
| 3modern | 399 | Stark, Ben M (1464) | Won 2-1 | +181482 |
| 4modern | 417 | Rogerson, Ian (1678) | Won 2-0 | +221504 |
| 5modern | 274 | Mayo, Daniel (1551) | Lost 0-2 | -181486 |
| average opponent: 1535record: 2-3 | new rating: 1486 | |||