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Individual Calculations April 2009 |
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| Quirke, Jeffrey L Total change: 20.25 | |   |
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| 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2146 | 2194 | 2.50 | 3 | 0.81 | 25 | 20.25 | |
|  Marinello, Beatriz | | wm | 2186 | USA | 1.00 | 1 | 0.49 | 25 | 12.25 | | | Rueda, Libardo | | | 2201 | USA | 0.50 | 1 | 0.01 | 25 | 0.25 | |  Mays, Shelly | | | 2052 | USA | 1.00 | 1 | 0.31 | 25 | 7.75 | |
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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