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Individual Calculations September 2009 |
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| Balkum, Alexander Total change: -7.25 | |   |
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| Houston Open | Houston, Texas | USA | 2009-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2123 | 2137 | 0.50 | 2 | -0.54 | 25 | -13.50 | |
|  Keatinge-Clay, Adrian | f | | 2234 | USA | 0.00 | 1 | -0.37 | 25 | -9.25 | |  Widener, Andrew | | | 2011 | USA | 0.50 | 1 | -0.17 | 25 | -4.25 | |
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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2276 | 2137 | 1.50 | 4 | 0.25 | 25 | 6.25 | |
| | Dean, Jim H | f | | 2264 | USA | 0.00 | 1 | -0.33 | 25 | -8.25 | | | Bereolos, Peter | f | | 2328 | USA | 0.50 | 1 | 0.25 | 25 | 6.25 | | | Shapiro, Daniel E | f | | 2291 | USA | 0.00 | 1 | -0.29 | 25 | -7.25 | | | Van Meter, Lester | f | | 2222 | USA | 1.00 | 1 | 0.62 | 25 | 15.50 | |
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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