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Individual Calculations October 2017 |
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| O`connor, Derek Total change: 10.00 | |   |
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| Neil Falconer Marathon | Berkeley, California | USA | 2017-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1913 | 2213 | 5.00 | 5 | 0.84 | 20 | 16.80 | |
|  Auyoung, Nathan | | | 1813 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Riese, Kayven | | | 1813 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Walder, Michael S | | | 2023 | USA | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Ivanov, Aleksandr | | | 2105 | USA | 1.00 | 1 | 0.35 | 20 | 7.00 | | | Yanofsky, Kevin | | | 1813 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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) | | | | 2017 CalChess State Championship | Santa Clara, California | USA | 2017-09-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2104 | 2225 | 3.50 | 6 | -0.34 | 20 | -6.80 | |
| | Pan, David | | | 1864 | USA | 0.50 | 1 | -0.40 | 20 | -8.00 | | | Wei, Jeffrey | | | 2005 | USA | 0.50 | 1 | -0.28 | 20 | -5.60 | | | Ezra, Paul Chambers | f | | 2178 | BDI | 0.50 | 1 | -0.07 | 20 | -1.40 | | | Li, Eric | | | 1825 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Manvelyan, Hayk | | | 2189 | USA | 1.00 | 1 | 0.45 | 20 | 9.00 | | | Holt, Conrad | g | | 2565 | USA | 0.00 | 1 | -0.12 | 20 | -2.40 | | | * 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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