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Individual Calculations March 2010 |
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| West, James R Total change: -63.15 | |   |
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| Edward Lasker Memorial and 93rd Annual Marshall Chess Club Championship | New York, New York | USA | 2009-12-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2070 | 2159 | 2.00 | 6 | -1.73 | 15 | -25.95 | |
|  Sarkar, Justin | m | | 2374 | USA | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Waxman, Marian | | | 2038 | USA | 0.00 | 1 | -0.66 | 15 | -9.90 | |  Farber, Nelson M | | | 1979 | USA | 0.50 | 1 | -0.24 | 15 | -3.60 | | | Margiotta, Jason J | | | 1992 | USA | 0.50 | 1 | -0.22 | 15 | -3.30 | | | Rabin, Evan Z | | | 2021 | USA | 0.00 | 1 | -0.69 | 15 | -10.35 | | | Frumkin, Edward A | | | 2017 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | |
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) | | | | 2010 Happy New Year Open | New york, New York | USA | 2010-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2142 | 2157 | 0.50 | 3 | -1.08 | 15 | -16.20 | |
| | Margiotta, Jason J | | | 1976 | USA | 0.00 | 1 | -0.74 | 15 | -11.10 | | | Sarkar, Justin | m | | 2378 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Barsky, Sam | | | 2073 | USA | 0.50 | 1 | -0.12 | 15 | -1.80 | |
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) | | | | 42nd Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2010-01-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2197 | 2157 | 0.50 | 4 | -1.40 | 15 | -21.00 | |
| | Kudrin, Sergey | g | | 2557 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Shvartsman, Andrew | c | | 2134 | USA | 0.00 | 1 | -0.53 | 15 | -7.95 | | | Vilenchuk, Michael | | | 2084 | USA | 0.00 | 1 | -0.60 | 15 | -9.00 | | | Odeh, Kenneth | | | 2012 | NGR | 0.50 | 1 | -0.19 | 15 | -2.85 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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