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Individual Calculations April 2009 |
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| Harmon-Vellotti, Luke Total change: 30.25 | |   |
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| 2008 Washington Class Championships - Expert Section | Redmond Washington | USA | 2008-11-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2056 | 1978 | 3.00 | 5 | 0.99 | 25 | 24.75 | |
|  Macgregor, Michael | | | 2220 | USA | 0.50 | 1 | 0.30 | 25 | 7.50 | |  Huang, Richard | | | 1847 | CAN | 0.50 | 1 | -0.18 | 25 | -4.50 | | | Wu, Darren | | | 2069 | USA | 1.00 | 1 | 0.62 | 25 | 15.50 | | | May, Andy P | | | 2121 | USA | 0.00 | 1 | -0.31 | 25 | -7.75 | | | Gay, Daniel Zachary | | | 2021 | USA | 1.00 | 1 | 0.56 | 25 | 14.00 | |
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) | | | | 18th Annual North American Open | Las vegas, Nevada | USA | 2008-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2173 | 1978 | 1.50 | 5 | 0.22 | 25 | 5.50 | |
| | Iwamoto, Takashi | f | | 2245 | USA | 0.00 | 1 | -0.18 | 25 | -4.50 | | | Yee, Michael A | | | 2069 | USA | 1.00 | 1 | 0.62 | 25 | 15.50 | | | Lamby, Philipp | | | 2271 | GER | 0.50 | 1 | 0.35 | 25 | 8.75 | | | Anderson, Renard W | f | | 2186 | USA | 0.00 | 1 | -0.23 | 25 | -5.75 | | | He, Tianyi | | | 2094 | USA | 0.00 | 1 | -0.34 | 25 | -8.50 | |
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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