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Individual Calculations March 2012 |
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| Porter, Russel Total change: 5.25 | |   |
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| John Powell Memorial Open 2012 | Kingston | JAM | 2012-01-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1992 | 2118 | 3.00 | 4 | 0.35 | 15 | 5.25 | |
|  Brooks, Paul | | | 1863 | JAM | 1.00 | 1 | 0.19 | 15 | 2.85 | | | James, Stuart | | | 1942 | JAM | 1.00 | 1 | 0.27 | 15 | 4.05 | |  Davy, Damion | | | 2112 | JAM | 0.50 | 1 | -0.01 | 15 | -0.15 | | | Myers, Peter | | | 2049 | JAM | 0.50 | 1 | -0.10 | 15 | -1.50 | |
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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