Kolbig, Kent
Current rating: 1447
Record: 3-6-2
| Grand Prix Boston 2003 (LGN limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 191 | Mathews, Keith (1500) | Won 2-1 | +181500 |
| 2sealed | 61 | Hayner, Michael (1525) | Lost 0-2 | -171483 |
| 3sealed | 184 | Prater, James (1435) | Won 2-0 | +171500 |
| 4sealed | 126 | Faucher, Bernie (1520) | Lost 0-2 | -181482 |
| 5sealed | 165 | Voigt, Jeffrey (1482) | Draw 1-1 | 01482 |
| 6sealed | 154 | Weaver, Luke (1500) | Lost 1-2 | -171465 |
| 7sealed | 132 | Hulse, Kevin (1481) | Lost 1-2 | -181447 |
| average opponent: 1492record: 2-4-1 | new rating: 1447 | |||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 44 | Grudzina, John (1500) | Won 2-1 | +181518 |
| 2sealed | 113 | concepcion, gary (1518) | Draw 1-1 | 01518 |
| 3sealed | 108 | Kirk, Kevin (1518) | Lost 0-2 | -181500 |
| 4sealed | 188 | Tolliver, Jeremy (1501) | Lost 1-2 | -181482 |
| average opponent: 1509record: 1-2-1 | new rating: 1482 | |||