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Individual Calculations March 2010 |
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| Treger, Yefim Total change: -13.65 | |   |
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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 |
| 2203 | 2223 | 3.00 | 6 | -0.26 | 15 | -3.90 | |
|  Margiotta, Jason J | | | 1992 | USA | 0.00 | 1 | -0.79 | 15 | -11.85 | |  Sobo, Henry C | | | 2023 | USA | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Berg, George P | | | 2045 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Panchanathan, Magesh | g | | 2541 | IND | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Waxman, Marian | | | 2038 | USA | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Kudrin, Sergey | g | | 2577 | USA | 0.00 | 1 | -0.11 | 15 | -1.65 | |
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) | | | | 36th Annual Eastern Open | Washington DC | USA | 2009-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2178 | 2223 | 3.50 | 6 | 0.15 | 15 | 2.25 | |
| | Ding, Andrew | | | 2048 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Kaufman, Raymond | m | | 2280 | USA | 0.50 | 1 | 0.08 | 15 | 1.20 | | | Jaleel, Zaroug A | | | 2088 | USA | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Minear, Peter | | | 2242 | USA | 0.50 | 1 | 0.03 | 15 | 0.45 | | | Castaneda, Nelson | f | | 2294 | USA | 0.50 | 1 | 0.10 | 15 | 1.50 | | | Guo, Gill Y | | | 2115 | USA | 0.50 | 1 | -0.15 | 15 | -2.25 | |
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 |
| 2046 | 2253 | 1.00 | 1 | 0.23 | 15 | 3.45 | |
| | Berg, George P | | | 2046 | USA | 1.00 | 1 | 0.23 | 15 | 3.45 | |
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 |
| 2052 | 2253 | 2.00 | 4 | -1.03 | 15 | -15.45 | |
| | Clancy, Daniel J | | | 2116 | USA | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Bhatia, Kanwal K | | | 2062 | ENG | 0.50 | 1 | -0.25 | 15 | -3.75 | | | Rozovsky, Daniel | f | | 2017 | USA | 0.00 | 1 | -0.80 | 15 | -12.00 | | | Odeh, Kenneth | | | 2012 | NGR | 1.00 | 1 | 0.20 | 15 | 3.00 | |
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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