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Individual Calculations September 2021 |
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| Carey, Michael P Total change: -16.40 | |   |
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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 |
| 2066 | 1908 | 2.50 | 5 | 0.95 | 20 | 19.00 | |
|  Ferreiro, Roberto | f | | 2279 | CUB | 0.00 | 1 | -0.10 | 20 | -2.00 | |  Voje, Daniel W | | | 1880 | USA | 1.00 | 1 | 0.46 | 20 | 9.20 | | | Perez, Ignacio | f | | 2063 | USA | 0.50 | 1 | 0.21 | 20 | 4.20 | | | Sage, J Timothy | | | 2037 | USA | 0.50 | 1 | 0.17 | 20 | 3.40 | | | Markzon, Gregory | f | | 2069 | USA | 0.50 | 1 | 0.21 | 20 | 4.20 | |
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 Continental Open - Under 2200 | Sturbridge, Massachusetts | USA | 2021-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1801 | 1874 | 0.50 | 4 | -1.77 | 20 | -35.40 | |
| | Li, Justin Y | | | 1478 | USA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Walsh, Tim R | | | 2020 | USA | 0.00 | 1 | -0.30 | 20 | -6.00 | | | Malyshev, Roman P | | | 1988 | RUS | 0.00 | 1 | -0.34 | 20 | -6.80 | | | Cao, Joy | | | 1719 | USA | 0.00 | 1 | -0.71 | 20 | -14.20 | |
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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