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Individual Calculations September 2021 |
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| Perez, Ignacio Total change: -2.80 | |   |
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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 |
| 1980 | 2063 | 3.50 | 6 | -0.14 | 20 | -2.80 | |
|  Hobbs, Richard Parker | | | 1710 | USA | 1.00 | 1 | 0.11 | 20 | 2.20 | |  Khmelnitsky, Igor | m | | 2463 * | USA | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Carey, Michael P | | | 1908 | USA | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Hulsey, Mark Allen | | | 2060 | USA | 1.00 | 1 | 0.50 | 20 | 10.00 | | | Gibbins, Wilson K | | | 1992 | USA | 0.00 | 1 | -0.60 | 20 | -12.00 | | | Hargrove, James Eryk | | | 1749 | USA | 1.00 | 1 | 0.14 | 20 | 2.80 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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