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Individual Calculations January 2009 |
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| Alvarez Hernandez, David Total change: 23.05 | |   |
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| III Internacional Bolsa de Valores | Santa Ana | CRC | 2008-09-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2085 | 1940 | 2.00 | 5 | 0.46 | 25 | 11.50 | |
|  Castillo, Rommel | | | 2144 | NCA | 0.50 | 1 | 0.26 | 25 | 6.50 | |  Centeno Mora, Erick | | | 2048 | CRC | 0.50 | 1 | 0.15 | 25 | 3.75 | | | Alfaro, Carlos | | | 2113 | CRC | 0.00 | 1 | -0.27 | 25 | -6.75 | | | Bermudez Munoz, Alexander | | | 2045 | CRC | 0.00 | 1 | -0.36 | 25 | -9.00 | | | Campos Cerdas, Jorge | | | 2073 | CRC | 1.00 | 1 | 0.68 | 25 | 17.00 | |
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 | | Metropolitano 2008 | San Jose | CRC | 2008-12-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2101 | 1939 | 2.00 | 4 | 0.77 | 15 | 11.55 | |
| | Gonzalez, Bernal | m | | 2289 | CRC | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Murillo, Jaime | | | 1861 | CRC | 1.00 | 1 | 0.39 | 15 | 5.85 | | | Granados, Carlos | | | 2156 | CRC | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Vives, David | | | 2097 | CRC | 1.00 | 1 | 0.71 | 15 | 10.65 | |
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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