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Individual Calculations December 2017 |
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| Sirkka, Pertti T Total change: 2.80 | |   |
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| 2017 Norths John Purdy Memorial Open | Sydney | AUS | 2017-09-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1880 | 1865 | 3.50 | 7 | 0.14 | 20 | 2.80 | |
|  Jeffreys, Roger W | | | 1649 | AUS | 1.00 | 1 | 0.22 | 20 | 4.40 | |  Ng, Clive | c | | 2032 | AUS | 0.00 | 1 | -0.28 | 20 | -5.60 | | | Zekic, Mirsad | | | 1636 | AUS | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Charles, Gareth | | | 2085 | AUS | 0.50 | 1 | 0.28 | 20 | 5.60 | | | Tefanis, Frank | | | 2008 | AUS | 0.00 | 1 | -0.31 | 20 | -6.20 | | | Stern, David | | | 1664 | AUS | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Berezina-Feldman, Irina | m | wm | 2085 | AUS | 0.00 | 1 | -0.22 | 20 | -4.40 | |
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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