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Individual Calculations April 2009 |
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| Jacobs, Jon Total change: 8.25 | |   |
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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 |
| 2185 | 2299 | 2.50 | 3 | 0.55 | 15 | 8.25 | |
|  Zimmer, Ralph P | f | | 2284 | USA | 0.50 | 1 | -0.02 | 15 | -0.30 | |  Kamat, Amar Mahend | | | 2167 | IND | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Berg, George P | | | 2103 | USA | 1.00 | 1 | 0.25 | 15 | 3.75 | |
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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