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Individual Calculations February 2015 |
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| Lewis, David Rhys Total change: -38.80 | |   |
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| 2015 South Wales New Year Open | Bridgend | WLS | 2015-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1824 | 1933 | 1.50 | 4 | -0.97 | 40 | -38.80 | |
|  Rovaretti, David | | | 1643 | WLS | 1.00 | 1 | 0.16 | 40 | 6.40 | |  Sands, David A | | | 2192 | WLS | 0.00 | 1 | -0.18 | 40 | -7.20 | | | May, Adam J | | | 1907 | WLS | 0.00 | 1 | -0.54 | 40 | -21.60 | | | Sivarajasingam, Shayanna | | | 1553 | WLS | 0.50 | 1 | -0.41 | 40 | -16.40 | |
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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