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Individual Calculations July 2009 |
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| Patchell, Erik Total change: 29.25 | |   |
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| 47th Cincinnati Open | Cincinnati, Ohio | USA | 2009-03-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2107 | 2142 | 3.00 | 4 | 0.83 | 25 | 20.75 | |
|  Amarasinghe, Prashanthe | | | 1949 | SRI | 1.00 | 1 | 0.25 | 25 | 6.25 | |  Bixel, Carl | | | 2223 | USA | 1.00 | 1 | 0.61 | 25 | 15.25 | | | Boor, Carl | f | | 2318 | USA | 0.00 | 1 | -0.27 | 25 | -6.75 | | | Friedman, David | | | 1937 | USA | 1.00 | 1 | 0.24 | 25 | 6.00 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | 51st Gem City Open | Dayton, Ohio | USA | 2009-06-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2202 | 2140 | 2.00 | 4 | 0.34 | 25 | 8.50 | |
| | Dean, Jim | f | | 2232 | USA | 0.50 | 1 | 0.13 | 25 | 3.25 | | | Boor, Carl | f | | 2291 | USA | 0.00 | 1 | -0.30 | 25 | -7.50 | | | Smith, Garrett | | | 2119 | USA | 1.00 | 1 | 0.47 | 25 | 11.75 | | | Bixel, Carl | | | 2166 | USA | 0.50 | 1 | 0.04 | 25 | 1.00 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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