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Individual Calculations January 2009 |
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| Needham, Bryan Total change: -17.00 | |   |
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| III Internacional Bolsa de Valores | Santa Ana | CRC | 2008-09-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2112 | 2033 | 1.00 | 3 | -0.25 | 25 | -6.25 | |
|  Valdes, Leonardo | m | | 2383 | CRC | 0.00 | 1 | -0.11 | 25 | -2.75 | |  Leandro, Jhonny | | | 2089 | CRC | 0.00 | 1 | -0.42 | 25 | -10.50 | | | Mendez, Oscar | | | 1863 | CRC | 1.00 | 1 | 0.28 | 25 | 7.00 | |
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) | | | | Metropolitano 2008 | San Jose | CRC | 2008-12-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2128 | 2022 | 1.00 | 4 | -0.43 | 25 | -10.75 | |
| | Granados, Carlos | | | 2156 | CRC | 0.00 | 1 | -0.32 | 25 | -8.00 | | | Solano Lopaz, Royner | | | 2103 | CRC | 0.50 | 1 | 0.11 | 25 | 2.75 | | | Castillo, Rommel | | | 2119 | NCA | 0.50 | 1 | 0.13 | 25 | 3.25 | | | Ugalde, Ronald | | | 2134 | CRC | 0.00 | 1 | -0.35 | 25 | -8.75 | |
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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