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Individual Calculations July 2009 |
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| Duran Vega, Sergio Total change: 19.80 | |   |
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| Copa Parque del Norte | San José | CRC | 2009-04-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2185 | 2057 | 2.50 | 5 | 0.76 | 15 | 11.40 | |
|  Duran Vega, Andres | | | 1933 | CRC | 0.00 | 1 | -0.67 | 15 | -10.05 | | | Valdes Romero, Leonardo | m | | 2403 | CRC | 0.50 | 1 | 0.39 | 15 | 5.85 | |  Castillo, Rommel | | | 2149 | NCA | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Solis Gaitan, Efren | | | 2124 | CRC | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Murillo Tsijli, Alexis | m | | 2317 | CRC | 0.50 | 1 | 0.32 | 15 | 4.80 | |
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 |
| 2244 | 2057 | 2.00 | 5 | 0.56 | 15 | 8.40 | |
| | Gonzalez Acosta, Bernal | m | | 2407 | CRC | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Davila Lopez, Carlos | m | | 2360 | NCA | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Montoya Aguilar, Cristian | | | 1900 | CRC | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Castillo, Rommel | | | 2149 | NCA | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Valdes Romero, Leonardo | m | | 2403 | CRC | 0.00 | 1 | -0.11 | 15 | -1.65 | |
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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