Cohen, Debbie
Current rating: 1617
Record: 30-20-4
| Grand Prix Dallas 2007 (extended) | starting rating: 1633 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 106 | Pieper, Jeff (1518) | Draw 1-1 | -21631 |
| 3extended | 130 | Van Dyke, Michael (1518) | Draw 0-0 | -21629 |
| 4extended | 230 | Harkwright, Hayden L (1518) | Draw 1-1 | -21627 |
| 5extended | 186 | Huteson, Tom (1484) | Lost 1-2 | -211606 |
| 6extended | 214 | Palmer, David A (1481) | Draw 1-1 | -21604 |
| 7extended | 169 | Cason, Daniel (1480) | Won 2-0 | +161620 |
| 8extended | 126 | Hutchins, Robert (1572) | Won 2-0 | +171637 |
| 9extended | 91 | Flodstrom-Sconce, Christian (1517) | Lost 0-2 | -201617 |
| top | average opponent: 1511record: 2-2-4 | new rating: 1617 | ||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1649 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 100 | Lafakis, Chris (1534) | Lost 0-2 | -201629 |
| 3sealed | 310 | Haney, Preston (1516) | Won 2-1 | +161645 |
| 4sealed | 153 | Green, Ben A (1528) | Won 2-0 | +151660 |
| 5sealed | 121 | LeFevre, Robert D (1507) | Lost 0-2 | -201640 |
| 6sealed | 140 | Cheung, Kam Hin (1516) | Won 2-0 | +151655 |
| 7sealed | 123 | Trepanier, Dave (1603) | Lost 0-2 | -191636 |
| 8sealed | 163 | Jones, Trent (1576) | Lost 1-2 | -191617 |
| 9sealed | 146 | Kim, Isaac (1501) | Won 2-0 | +161633 |
| top | average opponent: 1535record: 4-4 | new rating: 1633 | ||
| Grand Prix Phoenix 2006 (CSP limited) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 44 | Hayes, David (1468) | Lost 0-2 | -211609 |
| 2sealed | 97 | York, Thomas l (1482) | Lost 1-2 | -201589 |
| 3sealed | 138 | Dodd, Rebecca M (1465) | Won 2-0 | +161605 |
| 4sealed | 158 | Gaieck, Raymond (1485) | Won 2-1 | +161621 |
| 5sealed | 102 | Wong, Gary (1500) | Won 2-0 | +151636 |
| 6sealed | 65 | Lechner, Jarom A (1518) | Won 2-0 | +161652 |
| 7sealed | 40 | Bitter, Victor (1609) | Lost 0-2 | -191633 |
| 8sealed | 63 | Pauly, Christopher M (1478) | Won 2-1 | +161649 |
| top | average opponent: 1501record: 5-3 | new rating: 1649 | ||
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 99 | Levine, Daniel (1501) | Won 2-1 | +161624 |
| 2sealed | 109 | Da Rocha, Christopher (1518) | Lost 1-2 | -201604 |
| 3sealed | 167 | Powelson, Jeff (1559) | Lost 1-2 | -181586 |
| 4sealed | 185 | Thomas, William R (1482) | Lost 1-2 | -201566 |
| 5sealed | 178 | Magill, Sean (1464) | Won 2-1 | +161582 |
| 6sealed | 134 | De Carvalho, Peter (1482) | Won 2-0 | +161598 |
| 7sealed | 100 | Beckemeyer, Dustin (1504) | Won 2-1 | +161614 |
| 8sealed | 67 | Hill, Zac (1498) | Won 2-1 | +161630 |
| top | average opponent: 1501record: 5-3 | new rating: 1630 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 112 | Miller, Paul (1484) | Won 2-0 | +171546 |
| 2sealed | 97 | Prior, Chris (1518) | Lost 1-2 | -181528 |
| 3sealed | 166 | Zaun, Michael (1707) | Won 2-1 | +211549 |
| 4sealed | 82 | Cheseldine, Robert (1486) | Won 2-0 | +171566 |
| 5sealed | 56 | Gilson, Marcus (1505) | Won 2-1 | +171583 |
| 6sealed | 48 | Woltereck, Chris (1723) | Won 2-1 | +201603 |
| 7sealed | 20 | Harvey, Eugene (1930) | Lost 0-2 | -121591 |
| 8sealed | 56 | Marks, Marty (1550) | Won 2-1 | +171608 |
| top | average opponent: 1613record: 6-2 | new rating: 1608 | ||
| Grand Prix Austin 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 7 | Rivera, Gerardo (1500) | Won 2-0 | +181518 |
| 2sealed | 16 | Corbett, Justin (1465) | Lost 0-2 | -191499 |
| 3sealed | 104 | Miller, Carl (1466) | Won 2-1 | +171516 |
| 4sealed | 67 | Vajdos, Scott (1518) | Won 2-0 | +181534 |
| 5sealed | 52 | Haley, Stephen (1535) | Won 2-0 | +181552 |
| 6sealed | 44 | Hansen, Kevin (1498) | Lost 1-2 | -191533 |
| 7sealed | 38 | Richards, Shane (1536) | Won 2-0 | +191552 |
| 8sealed | 47 | Lipp, Scott (1489) | Won 2-1 | +161568 |
| 9rochester | 10 | Grimes, William (1547) | Lost 1-2 | -181550 |
| 10rochester | 18 | Bright, Jeremy (1469) | Lost 1-2 | -191531 |
| 11rochester | 28 | King, James (1485) | Won 2-0 | +171548 |
| 12rochester | 7 | Conway, Douglas (1595) | Won 2-1 | +191567 |
| 13rochester | 26 | Harris, Russell (1557) | Lost 0-2 | -191548 |
| 14rochester | 9 | McCall, Brian (1485) | Lost 1-2 | -191529 |
| top | average opponent: 1510record: 8-6 | new rating: 1529 | ||