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Individual Calculations April 2008 |
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| Zapata, Alexander Total change: 2.40 | |   |
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| Pan-American Junior Championship | Riobamba | ECU | 2007-08-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2147 | 2029 | 3.50 | 8 | 0.68 | 15 | 10.20 | |
|  Angulo P., Carlos | | | 2169 | BOL | 1.00 | 1 | 0.69 | 15 | 10.35 | | | Pena, Alfredo | f | | 2248 | COL | 0.00 | 1 | -0.22 | 15 | -3.30 | |  Hungaski, Robert Andrew | m | | 2379 | USA | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Morales Castillo, Marco | | | 2137 | ECU | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Calderon, Oliver | | | 1972 | ECU | 1.00 | 1 | 0.42 | 15 | 6.30 | | | Toniutti, Ezio | | | 2115 | ARG | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Calderon Vallejo, Jonathan | | | 2031 | ECU | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Pesantes Aucay, Jose | | | 2122 | ECU | 1.00 | 1 | 0.63 | 15 | 9.45 | |
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) | | | | Primer Continental Escolar CCSA 2007 U17 Absolute | Cartagena | COL | 2007-12-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2136 | 2013 | 0.50 | 3 | -0.52 | 15 | -7.80 | |
| | Becerra, Juan David | | | 2084 | COL | 0.00 | 1 | -0.40 | 15 | -6.00 | | | Fernandez, Fernando | | | 2261 | PER | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Perez O, Cesar Camilo | | | 2063 | COL | 0.50 | 1 | 0.07 | 15 | 1.05 | |
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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