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Individual Calculations September 2021 |
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| Fedorowicz, John P Total change: -12.60 | |   |
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| 4th Annual John T. Irwin National Tournament of Senior State Champions | Cherry Hill, New Jersey | USA | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2137 | 2413 | 4.00 | 6 | -0.92 | 10 | -9.20 | |
|  Joelson, Daniel | | | 2126 | USA | 0.50 | 1 | -0.34 | 10 | -3.40 | |  Markzon, Gregory | f | | 2069 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Eckert, Doug D | f | | 2172 | USA | 0.50 | 1 | -0.30 | 10 | -3.00 | | | Sherman, David | | | 2021 | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Ginsburg, Mark | m | | 2315 | USA | 0.50 | 1 | -0.13 | 10 | -1.30 | | | Koganov, Mikhail | | | 2119 | USA | 0.50 | 1 | -0.35 | 10 | -3.50 | |
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) | | | | 53rd Annual Atlantic Open - Major | Reston, Virginia | USA | 2021-08-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2136 | 2424 | 0.50 | 1 | -0.34 | 10 | -3.40 | |
| | Sriniaiyer, Sudarshan | | | 2136 | USA | 0.50 | 1 | -0.34 | 10 | -3.40 | |
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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