Powelson, Jeff
Current rating: 1612
Record: 20-14-1
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 64 | Pallone, Eric P (1500) | Lost 0-2 | -191541 |
| 3sealed | 334 | McKay, Douglas (1469) | Won 2-0 | +171558 |
| 4sealed | 144 | Werle, Scott (1520) | Won 2-1 | +171575 |
| 5sealed | 75 | Evenpenle, Colby (1535) | Lost 0-2 | -191556 |
| 6sealed | 171 | Beatty, Robert (1524) | Won 2-1 | +181574 |
| 7sealed | 136 | Faulkner, Brant (1655) | Won 2-1 | +191593 |
| 8sealed | 57 | Jordan, Danny (1538) | Won 2-0 | +171610 |
| 9sealed | 49 | Morawski, Jonathan (1737) | Won 2-0 | +201630 |
| 10draft | 17 | Jordan, Paul (1756) | Lost 1-2 | -151615 |
| 11draft | 17 | Ford, James D (1580) | Won 2-1 | +171632 |
| 12draft | 28 | Farrell, Michael K (1591) | Won 2-1 | +171649 |
| 13draft | 56 | Navickas, Justin D (1617) | Draw 1-1 | 01649 |
| 14draft | 24 | Shapiro, Yakov (1662) | Lost 1-2 | -181631 |
| 15draft | 50 | Szolopiak, James (1578) | Lost 0-2 | -191612 |
| top | average opponent: 1590record: 8-5-1 | new rating: 1612 | ||
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 83 | Foley, Mike (1510) | Lost 0-2 | -191542 |
| 2sealed | 193 | Dauphin, Ian M (1482) | Won 2-0 | +171559 |
| 3sealed | 167 | Cohen, Debbie (1604) | Won 2-1 | +191578 |
| 4sealed | 92 | Tee, Matthew (1570) | Lost 0-2 | -181560 |
| top | average opponent: 1541record: 2-2 | new rating: 1560 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1601 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 75 | Kelly, Brian (1481) | Lost 1-2 | -201581 |
| 3sealed | 169 | Adcock, Chris (1500) | Lost 0-2 | -201561 |
| top | average opponent: 1491record: 0-2 | new rating: 1561 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 306 | Smith, Greg (1500) | Won 2-0 | +181518 |
| 2block | 66 | Becker, Jonathan (1806) | Won 2-1 | +231541 |
| 3block | 19 | Hebert, Carl (1570) | Won 2-0 | +191560 |
| 4block | 48 | De Rosa, Antonino (1867) | Won 2-0 | +231583 |
| 5block | 26 | Trachtenberg, Yosef (1643) | Lost 0-2 | -171566 |
| 6block | 129 | Buuch, Andrew (1541) | Lost 1-2 | -181548 |
| 7block | 87 | Glackin, Ryan (1538) | Won 2-1 | +181566 |
| 8block | 105 | Schneider, Marcus (1555) | Won 2-1 | +171583 |
| 9block | 77 | Bennett, Ian (1525) | Won 2-0 | +171600 |
| 10block | 53 | Spotts, Steven (1604) | Won 2-1 | +181618 |
| 11block | 29 | Bridy, Dan (1655) | Lost 0-2 | -171601 |
| 12block | 40 | Westfall, Matthew (1628) | Won 2-1 | +191620 |
| 13block | 26 | Levin, Eugene (1585) | Lost 0-2 | -191601 |
| 14block | 37 | Shiels, David (1597) | Won 2-0 | +181619 |
| 15block | 31 | Piekarski, Chris (1631) | Lost 0-2 | -181601 |
| top | average opponent: 1617record: 10-5 | new rating: 1601 | ||