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Individual Calculations September 2018 |
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| Leach, Charlie Total change: 20.40 | |   |
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| 50th Annual Atlantic Open | Falls Church, Virginia | USA | 2018-08-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2036 | 1822 | 1.50 | 4 | 0.51 | 40 | 20.40 | |
|  Prestia, Paris | | | 1825 | USA | 0.00 | 1 | -0.50 | 40 | -20.00 | |  Victoria, Narciso | | | 2156 | USA | 0.50 | 1 | 0.38 | 40 | 15.20 | | | Liang, Jason | | | 2046 | USA | 1.00 | 1 | 0.78 | 40 | 31.20 | | | Quirke, Jeffrey | | | 2118 | USA | 0.00 | 1 | -0.15 | 40 | -6.00 | |
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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