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Individual Calculations April 2009 |
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| Dai, Yang Total change: 2.40 | |   |
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| 35th Annual Eastern Open | Washington DC | USA | 2008-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2171 | 1991 | 1.00 | 5 | -0.38 | 15 | -5.70 | |
|  Hu, Zhi-Ya | | | 2253 | USA | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Times, Jerald W | | | 2202 | USA | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Shibut, Macon A | f | | 2263 | USA | 0.00 | 1 | -0.17 | 15 | -2.55 | | | Privman, Boris | f | | 2185 | USA | 0.00 | 1 | -0.25 | 15 | -3.75 | |  Freix, Andrew J | | | 1953 | USA | 1.00 | 1 | 0.45 | 15 | 6.75 | |
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) | | | | 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2196 | 2000 | 0.50 | 1 | 0.25 | 15 | 3.75 | |
| | Times, Jerald W | | | 2196 | USA | 0.50 | 1 | 0.25 | 15 | 3.75 | |
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) | | | | 41st Annual Virginia Open | McLean, Virginia | USA | 2009-02-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2075 | 2000 | 1.50 | 3 | 0.29 | 15 | 4.35 | |
| | Cohen, Harry S | | | 2110 | USA | 0.50 | 1 | 0.15 | 15 | 2.25 | | | Carroll, William | | | 1909 | USA | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Balasubramanian, A | | | 2206 | IND | 0.00 | 1 | -0.24 | 15 | -3.60 | |
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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