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Individual Calculations May 2018 |
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| Van Der Westhuizen, Donald Total change: -60.40 | |   |
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| 2018 South African Junior Closed Championships (U18 Boys) | Benoni | RSA | 2018-04-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1696 | 1694 | 0.00 | 3 | -1.51 | 40 | -60.40 | |
|  Khumalo, Keith | | | 1951 | RSA | 0.00 | 1 | -0.18 | 40 | -7.20 | | | Prinsloo, Marthinus | | | 1498 | RSA | 0.00 | 1 | -0.75 | 40 | -30.00 | |  Felix, Devon | | | 1640 | RSA | 0.00 | 1 | -0.58 | 40 | -23.20 | |
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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