McCollum, Mark
Current rating: 1511
Record: 7-6
| Grand Prix Kansas City 2003 (MRD limited) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 133 | Downing, Steve (1484) | Lost 1-2 | -191516 |
| 2sealed | 160 | Davis, Ross (1482) | Won 2-1 | +171533 |
| 3sealed | 140 | Scott, Stephen (1442) | Lost 0-2 | -191514 |
| 4sealed | 201 | Schmidt, Jonathan (1431) | Won 2-1 | +161530 |
| 5sealed | 152 | Dotson, Tom (1485) | Lost 1-2 | -191511 |
| average opponent: 1465record: 2-3 | new rating: 1511 | |||
| Grand Prix Milwaukee 2002 (TOR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 48 | Lebovits, Matthew (1500) | Won 2-1 | +181518 |
| 2standard | 53 | Johnson, Matt (1500) | Lost 0-2 | -181500 |
| 3standard | 142 | Dawson, Matthew (1499) | Lost 1-2 | -181482 |
| 4standard | 259 | Paczkowski, Ken (1481) | Won 2-0 | +181500 |
| 5standard | 226 | Fournier, Joel (1501) | Won 2-0 | +181518 |
| 6standard | 145 | Castro, Robert (1565) | Lost 0-2 | -171501 |
| 7standard | 156 | salerno, shane (1499) | Won 2-0 | +181519 |
| 8standard | 101 | King, Samuel (1425) | Won 2-0 | +161535 |
| average opponent: 1496record: 5-3 | new rating: 1535 | |||