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Individual Calculations October 2018 |
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| Zhang, Derek Total change: 2.80 | |   |
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| 68th Annual Oregon Open | Portland, Oregon | USA | 2018-09-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2213 | 2101 | 1.50 | 4 | 0.07 | 40 | 2.80 | |
|  Cigan, Jason | | | 2026 | USA | 1.00 | 1 | 0.40 | 40 | 16.00 | |  Peng, Shunkai | f | | 2304 | CHN | 0.50 | 1 | 0.26 | 40 | 10.40 | | | Raptis, Nick | f | | 2333 | USA | 0.00 | 1 | -0.21 | 40 | -8.40 | | | Talyansky, Seth | c | | 2187 | USA | 0.00 | 1 | -0.38 | 40 | -15.20 | |
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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