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Individual Calculations September 2021 |
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| Quirke, Jeffrey L Total change: -10.20 | |   |
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| 53rd Annual Atlantic Open - Major | Reston, Virginia | USA | 2021-08-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1868 | 2118 | 3.50 | 5 | -0.51 | 20 | -10.20 | |
|  Tay, Brian | | | 1800 | USA | 0.00 | 1 | -0.87 | 20 | -17.40 | |  Shoykhet, Benjamin E | | | 1855 | USA | 0.50 | 1 | -0.32 | 20 | -6.40 | | | McPherson, Kevin | | | 1995 | USA | 1.00 | 1 | 0.33 | 20 | 6.60 | | | Cardwell, Guy | | | 1899 | USA | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Macmillan, John C | | | 1791 | USA | 1.00 | 1 | 0.13 | 20 | 2.60 | |
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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