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Individual Calculations July 2009 |
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| Castillo, Rommel Total change: -26.25 | |   |
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| Copa Ocean Grupo B | San José | CRC | 2009-01-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2234 | 2122 | 1.50 | 3 | 0.39 | 15 | 5.85 | |
|  Murillo Arguedas, Jaime | | | 1848 | CRC | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Gonzalez Acosta, Bernal | m | | 2440 | CRC | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Valdes Romero, Leonardo | m | | 2413 | CRC | 0.50 | 1 | 0.35 | 15 | 5.25 | |
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) | | | | Copa Parque del Norte | San José | CRC | 2009-04-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2187 | 2149 | 0.00 | 2 | -0.91 | 15 | -13.65 | |
| | Murillo Tsijli, Alexis | m | | 2317 | CRC | 0.00 | 1 | -0.28 | 15 | -4.20 | |  Duran Vega, Sergio | | | 2057 | CRC | 0.00 | 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) | | | | Copa Metropolitana | San Jose | CRC | 2009-05-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2246 | 2149 | 1.00 | 5 | -0.92 | 15 | -13.80 | |
| | Murillo Tsijli, Alexis | m | | 2317 | CRC | 1.00 | 1 | 0.72 | 15 | 10.80 | | | Gonzalez Acosta, Bernal | m | | 2440 | CRC | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Davila Lopez, Carlos | m | | 2360 | NCA | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Duran Vega, Sergio | | | 2057 | CRC | 0.00 | 1 | -0.63 | 15 | -9.45 | | | Alvarado Rodriguez, Dizan | | | 2055 | CRC | 0.00 | 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) | | | | Costa Rican National Championship Phase 1.2 | Moravia | CRC | 2009-06-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2079 | 2149 | 5.00 | 9 | -0.31 | 15 | -4.65 | |
| | Campos Cerdas, Jorge | | | 2027 | CRC | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Leandro, Jhonny | | | 2100 | CRC | 0.00 | 1 | -0.57 | 15 | -8.55 | | | Redondo Vargas, Diego | | | 1872 | CRC | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Vargas Serano, Pablo | | | 1976 | CRC | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Granados, Carlos | | | 2128 | CRC | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Alfaro, Carlos | | | 2104 | CRC | 0.00 | 1 | -0.56 | 15 | -8.40 | | | Maynard, Francis | | | 2180 | CRC | 1.00 | 1 | 0.54 | 15 | 8.10 | | | Bermudez, Sergio | f | | 2161 | CRC | 0.00 | 1 | -0.48 | 15 | -7.20 | | | Alfaro Rojas, Alfonso | | | 2163 | CRC | 0.00 | 1 | -0.48 | 15 | -7.20 | |
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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