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Individual Calculations April 2009 |
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| Urena, Omar Total change: -27.50 | |   |
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| Costa Rican National Championship Phase 1.1 | San Jose | CRC | 2009-01-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2001 | 1951 | 1.50 | 6 | -1.10 | 25 | -27.50 | |
|  Fernandez, Mario | | | 1973 | CRC | 0.00 | 1 | -0.47 | 25 | -11.75 | | | Campos Cerdas, Jorge | | | 2056 | CRC | 0.50 | 1 | 0.14 | 25 | 3.50 | |  Brenes, Juan Carlos | | | 1997 | CRC | 0.00 | 1 | -0.44 | 25 | -11.00 | | | Trejos, Shirley | | | 1986 | CRC | 1.00 | 1 | 0.55 | 25 | 13.75 | | | Rodriguez Carmona, James | | | 2011 | CRC | 0.00 | 1 | -0.42 | 25 | -10.50 | | | Vargas Serano, Pablo | | | 1983 | CRC | 0.00 | 1 | -0.46 | 25 | -11.50 | |
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) | | |
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