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Individual Calculations September 2019 |
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| Karell, Leif Total change: 14.60 | |   |
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| 2019 Potomac Open | Rockville, Maryland | USA | 2019-08-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2065 | 1912 | 2.50 | 5 | 1.01 | 20 | 20.20 | |
|  Luo, Terry | | | 2054 | USA | 1.00 | 1 | 0.69 | 20 | 13.80 | |  Chiu, Isaac | | | 2131 | USA | 0.00 | 1 | -0.22 | 20 | -4.40 | | | Clancy, Daniel | | | 2074 | USA | 0.00 | 1 | -0.29 | 20 | -5.80 | | | Senft, Sean | | | 2055 | USA | 1.00 | 1 | 0.69 | 20 | 13.80 | | | Gilden, Larry | f | | 2013 | USA | 0.50 | 1 | 0.14 | 20 | 2.80 | |
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) | | | | 51st Annual Atlantic Open | Falls Church, Virginia | USA | 2019-08-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1945 | 1912 | 2.00 | 5 | -0.28 | 20 | -5.60 | |
| | Prestia, Paris | | | 2049 | USA | 0.00 | 1 | -0.32 | 20 | -6.40 | | | Webster, Scott | | | 1984 | USA | 0.50 | 1 | 0.10 | 20 | 2.00 | | | Heller, Garrett | | | 1952 | USA | 0.00 | 1 | -0.44 | 20 | -8.80 | | | Guzman, Victor | | | 1897 | USA | 0.50 | 1 | -0.02 | 20 | -0.40 | | | Beckman, Thomas | | | 1841 | USA | 1.00 | 1 | 0.40 | 20 | 8.00 | |
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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