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Individual Calculations April 2009 |
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| Margaritis, Ioannis Total change: -8.65 | |   |
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| Bikou Cup 2008 2nd Division | Attica | GRE | 2008-11-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1753 | 1702 | 2.50 | 4 | 0.72 | 25 | 18.00 | |
|  Giakoumis, Ioannis | | | 2018 | GRE | 0.50 | 1 | 0.37 | 25 | 9.25 | |  Nikoleris, Evangelos | | | 1876 | GRE | 0.00 | 1 | -0.27 | 25 | -6.75 | | | Karamanos, Athanasios | | | 1608 | GRE | 1.00 | 1 | 0.37 | 25 | 9.25 | | | Tsaknis, Vasilios | | | 1509 | GRE | 1.00 | 1 | 0.25 | 25 | 6.25 | |
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) | | | | 2009 Indiv. Youth Champ. of Attica - Boys U 12 | Nikea - Athens | GRE | 2008-12-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1559 | 1702 | 0.50 | 2 | -0.88 | 25 | -22.00 | |
| | Xanthopoulos, Vasilios | | | 1585 | GRE | 0.50 | 1 | -0.16 | 25 | -4.00 | | | Sidiropoulos, Nikolaos | | | 1533 | GRE | 0.00 | 1 | -0.72 | 25 | -18.00 | |
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) | | | NOTE: K factor changed | | 11th Aegaleo Open 2009 | Aegaleo - Athens | GRE | 2009-02-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1964 | 1667 | 0.00 | 2 | -0.31 | 15 | -4.65 | |
| | Mbirlis, Hristos | | | 2017 | GRE | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Kampitsis, Vasilios | | | 1911 | GRE | 0.00 | 1 | -0.20 | 15 | -3.00 | |
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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