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Individual Calculations February 2019 |
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| Zierk, Steven Total change: -5.60 | |   |
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| 28th Annual North American Open | Las Vegas, Nevada | USA | 2018-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2342 | 2510 | 6.00 | 9 | -0.31 | 10 | -3.10 | |
|  Zhao, Ian | | | 2178 | CAN | 0.50 | 1 | -0.38 | 10 | -3.80 | |  McConnell, Griffin | | | 2110 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Enkhtuul, Altan-Ulzii | | wg | 2267 | MGL | 1.00 | 1 | 0.20 | 10 | 2.00 | | | Della Morte, Pablo | m | | 2286 | ARG | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Bai, Jinshi | g | | 2568 | CHN | 0.50 | 1 | 0.08 | 10 | 0.80 | | | Song, Edward | f | | 2355 | USA | 1.00 | 1 | 0.29 | 10 | 2.90 | | | Pakleza, Zbigniew | g | | 2506 | POL | 0.50 | 1 | -0.01 | 10 | -0.10 | | | Brattain, Mika | | | 2411 | USA | 0.50 | 1 | -0.14 | 10 | -1.40 | | | Li, Zhaozhi | m | | 2399 | USA | 0.00 | 1 | -0.65 | 10 | -6.50 | | | * 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) | | | | Bay Area International | Burlingame, California | USA | 2019-01-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2316 | 2510 | 0.50 | 1 | -0.25 | 10 | -2.50 | |
| | Williams, Justus | f | | 2316 | USA | 0.50 | 1 | -0.25 | 10 | -2.50 | |
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) | | |
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