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Individual Calculations November 2009 |
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| Purdon, Colin Total change: -16.20 | |   |
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| 45th Berks and Bucks Championships | Twyford | ENG | 2009-08-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2091 | 2102 | 1.50 | 5 | -1.08 | 15 | -16.20 | |
|  Varnam, Liam D | | | 2167 | ENG | 0.50 | 1 | 0.09 | 15 | 1.35 | |  Roberson, Peter T | | | 2221 | ENG | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Archer-Lock, Christopher J | | | 2030 | ENG | 0.50 | 1 | -0.10 | 15 | -1.50 | | | Healey, Michael W | | | 2016 | ENG | 0.00 | 1 | -0.62 | 15 | -9.30 | | | Yurenok, Maria S | | wf | 2021 | ENG | 0.50 | 1 | -0.11 | 15 | -1.65 | |
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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