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Individual Calculations December 2017 |
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| Perkins, Joaquin Total change: 5.20 | |   |
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| 53rd Annual American Open - U2200 | Costa Mesa, California | USA | 2017-11-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1816 | 1950 | 4.00 | 6 | 0.13 | 40 | 5.20 | |
|  Wongso, Merissa | | | 1550 * | USA | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Yurenok, Sergey | | | 2104 | USA | 0.00 | 1 | -0.29 | 40 | -11.60 | |  Ke, Rianne | | wc | 1588 | USA | 1.00 | 1 | 0.10 | 40 | 4.00 | | | Eidelman, Gabriel | | | 1962 | USA | 0.00 | 1 | -0.48 | 40 | -19.20 | | | Hough, Randall | | | 1785 | USA | 1.00 | 1 | 0.28 | 40 | 11.20 | | | Gandhi, Shyam | | | 1906 | USA | 1.00 | 1 | 0.44 | 40 | 17.60 | | | * 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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