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Individual Calculations September 2009 |
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| O`Donnell, Robert Total change: 17.10 | |   |
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| 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2290 | 2054 | 2.50 | 6 | 1.14 | 15 | 17.10 | |
|  Haring, Ruth Inez | | wm | 1978 | USA | 0.50 | 1 | -0.10 | 15 | -1.50 | |  Shapiro, Daniel E | f | | 2291 | USA | 1.00 | 1 | 0.80 | 15 | 12.00 | | | Lenderman, Alex | m | | 2454 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Bereolos, Peter | f | | 2328 | USA | 1.00 | 1 | 0.83 | 15 | 12.45 | | | Sarkar, Justin | m | | 2388 | USA | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Tate, Emory A | m | | 2303 | USA | 0.00 | 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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