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Individual Calculations December 2018 |
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| Ball, Christopher Total change: -8.00 | |   |
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| 2018 Norths John Purdy Memorial Open | Sydney | AUS | 2018-09-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1740 | 1857 | 3.50 | 6 | -0.40 | 20 | -8.00 | |
|  Wilson, Mark L | | | 1659 | AUS | 0.00 | 1 | -0.76 | 20 | -15.20 | |  Case, Ivan | | | 1702 | AUS | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Creek, Peter | | | 1554 | AUS | 1.00 | 1 | 0.14 | 20 | 2.80 | | | Balan, Jigando | | | 1795 | IND | 1.00 | 1 | 0.41 | 20 | 8.20 | | | Cronin, Henry | | | 1878 | AUS | 0.50 | 1 | 0.03 | 20 | 0.60 | | | Mazay, Adam | | | 1852 | AUS | 0.00 | 1 | -0.51 | 20 | -10.20 | |
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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