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Individual Calculations July 2009 |
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| Castellano, Christopher Total change: -31.50 | |   |
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| 2009 National Inter-cities & Municipalities Team Championship | Tarlac City | PHI | 2009-04-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2238 | 2295 | 4.00 | 6 | 0.58 | 15 | 8.70 | |
|  Maga, Mirabeau | | | 2235 | PHI | 1.00 | 1 | 0.42 | 15 | 6.30 | |  Pascua, Haridas | | | 2359 | PHI | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Valencia, Belsar | | | 2142 | PHI | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Villamayor, Buenaventura | g | | 2474 | PHI | 0.50 | 1 | 0.23 | 15 | 3.45 | | | Arroyo, Christian | | | 2213 | PHI | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Medina, Vince Angelo | | | 2003 | PHI | 1.00 | 1 | 0.15 | 15 | 2.25 | |
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) | | | | Asian Open Chess Challenge | Olongapo City | PHI | 2009-05-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2026 | 2295 | 2.50 | 4 | -0.80 | 15 | -12.00 | |
| | Fronda, Jan Jodilyn | | | 1970 | PHI | 1.00 | 1 | 0.13 | 15 | 1.95 | | | Daylo, Leo Jr | | | 2033 | PHI | 0.00 | 1 | -0.82 | 15 | -12.30 | | | Medina, Vince Angelo | | | 2003 | PHI | 1.00 | 1 | 0.15 | 15 | 2.25 | | | Villanueva, Vic Neil | | | 2096 | PHI | 0.50 | 1 | -0.26 | 15 | -3.90 | |
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) | | | | 2nd Subic International Open | Subic Bay Freeport | PHI | 2009-05-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2252 | 2295 | 2.00 | 7 | -1.88 | 15 | -28.20 | |
| | Deepan, Chakkravarthy J | g | | 2482 | IND | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Lkhamsuren, Uuganbayar | | | 2038 | MGL | 0.50 | 1 | -0.32 | 15 | -4.80 | | | Morazo, John Ranel | | | 2133 | PHI | 0.50 | 1 | -0.21 | 15 | -3.15 | | | Arroyo, Christian | | | 2213 | PHI | 0.00 | 1 | -0.61 | 15 | -9.15 | | | Nguyen, Hoang Nam | c | | 2281 | VIE | 0.00 | 1 | -0.52 | 15 | -7.80 | | | Florendo, Paulo James | | | 2257 | PHI | 0.00 | 1 | -0.55 | 15 | -8.25 | | | Nadig, Kruttika | | wg | 2361 | IND | 1.00 | 1 | 0.59 | 15 | 8.85 | |
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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