Underwood, Jeff E
Current rating: 1437
Record: 2-6-1
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 285 | White, Michael S (1518) | Lost 1-2 | -171431 |
| 3sealed | 255 | Smith, Russell (1464) | Lost 0-2 | -171414 |
| 4sealed | 450 | Cowan, Chris H (1482) | Lost 1-2 | -171397 |
| 5sealed | 466 | beauchene, chris (1464) | Won 2-0 | +191416 |
| 6sealed | 380 | Wangerin, Jory (1547) | Won 2-0 | +211437 |
| 7sealed | 295 | Vlahovich, Heather J (1451) | Draw 1-1 | 01437 |
| average opponent: 1488record: 2-3-1 | new rating: 1437 | |||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 291 | Pagliocco, Anthony (1615) | Lost 0-2 | -161484 |
| 2sealed | 392 | Ikemura, Warren (1482) | Lost 0-2 | -181466 |
| 3sealed | 524 | Wilkins, Chris (1464) | Lost 0-2 | -181448 |
| average opponent: 1520record: 0-3 | new rating: 1448 | |||