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Individual Calculations July 2009 |
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| Duran Vega, Andres Total change: 37.25 | |   |
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| Copa Parque del Norte | San José | CRC | 2009-04-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2037 | 1933 | 4.50 | 7 | 1.96 | 25 | 49.00 | |
|  Duran Vega, Sergio | | | 2057 | CRC | 1.00 | 1 | 0.67 | 25 | 16.75 | |  Minero Pineda, Carlos | | | 2094 | CRC | 1.00 | 1 | 0.71 | 25 | 17.75 | | | Campos Sanchez, Roberto | | | 2108 | CRC | 0.50 | 1 | 0.23 | 25 | 5.75 | | | Solis Gaitan, Efren | | | 2124 | CRC | 0.00 | 1 | -0.25 | 25 | -6.25 | | | Gomez Huertas, Stanley | | | 2007 | CRC | 0.50 | 1 | 0.10 | 25 | 2.50 | | | Machado Ramirez, Allan | | | 2019 | CRC | 0.50 | 1 | 0.12 | 25 | 3.00 | | | Murillo Arguedas, Jaime | | | 1848 | CRC | 1.00 | 1 | 0.38 | 25 | 9.50 | |
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) | | | | Copa Metropolitana | San Jose | CRC | 2009-05-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2230 | 1933 | 0.00 | 3 | -0.47 | 25 | -11.75 | |
| | Valdes Romero, Leonardo | m | | 2283 | CRC | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Solis Gaitan, Efren | | | 2124 | CRC | 0.00 | 1 | -0.25 | 25 | -6.25 | | | Murillo Tsijli, Alexis | m | | 2283 | CRC | 0.00 | 1 | -0.11 | 25 | -2.75 | |
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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