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Individual Calculations September 2009 |
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| Davila Vega, Juan R. Total change: -11.55 | |   |
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| Puerto Rico National Championship 2009 | Caguas | PUR | 2009-07-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2150 | 2176 | 4.00 | 8 | -0.28 | 15 | -4.20 | |
|  Ovalle Burgos, Ramon | | | 2148 | PUR | 0.00 | 1 | -0.54 | 15 | -8.10 | | | Santana Alvarado, Miguel | | | 2159 | PUR | 1.00 | 1 | 0.48 | 15 | 7.20 | |  Montanez Nazario, Roberto | | | 2081 | PUR | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Sotelo Kohama, Daniel | | | 2173 | PUR | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Santa Torres, Juan M. | m | | 2229 | PUR | 0.50 | 1 | 0.07 | 15 | 1.05 | | | Vazquez Reyes, Raul | | | 2147 | PUR | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Berrios Echevarria, Gabriel | f | | 2161 | PUR | 0.00 | 1 | -0.52 | 15 | -7.80 | | | Rodriguez Santiago, Jaime | | | 2105 | PUR | 1.00 | 1 | 0.40 | 15 | 6.00 | |
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) | | | | Torneo Abierto de Arecibo | Arecibo | PUR | 2009-08-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2180 | 2176 | 0.50 | 2 | -0.49 | 15 | -7.35 | |
| | Montalvo Rosario, Alejandro | m | | 2278 | PUR | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Montanez Nazario, Roberto | | | 2081 | PUR | 0.50 | 1 | -0.13 | 15 | -1.95 | |
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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