Kolb, Jon
Current rating: 1519
Record: 4-3
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 299 | deChatonnayree, Erik T (1500) | Lost 0-2 | -181482 |
| 2sealed | 464 | Lewis, Quin (1482) | Won 2-0 | +181500 |
| 3sealed | 329 | Fewell, Dennis (1500) | Won 2-0 | +181518 |
| 4sealed | 217 | Perfect, Joel W (1520) | Lost 0-2 | -181500 |
| 5sealed | 395 | Meuangkhot, Lay (1499) | Won 2-1 | +181518 |
| 6sealed | 219 | Ma, Geoff (1640) | Won 2-1 | +201538 |
| 7sealed | 153 | Zheng, Alan (1463) | Lost 0-2 | -191519 |
| average opponent: 1515record: 4-3 | new rating: 1519 | |||