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Individual Calculations September 2011 |
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| Hall, Bobby J Total change: -37.05 | |   |
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| 51st Annual Pacific Southwest Open | Los Angeles, California | USA | 2011-07-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1992 | 2044 | 1.00 | 2 | -0.14 | 30 | -4.20 | |
|  Chase, Philip M | | | 1934 | USA | 1.00 | 1 | 0.35 | 30 | 10.50 | | | Nita, Marian N | | | 2049 | USA | 0.00 | 1 | -0.49 | 30 | -14.70 | |
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 | | 6th Metropolitan Chess FIDE Qualifier | Los Angeles, California | USA | 2011-07-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2062 | 2044 | 2.00 | 4 | 0.11 | 15 | 1.65 | |
| | Huang, Vincent | | | 2128 | USA | 0.00 | 1 | -0.38 | 15 | -5.70 | |  Stevens, Lawrence | | | 2056 | USA | 1.00 | 1 | 0.52 | 15 | 7.80 | | | Beilin, Allan | | | 1851 | USA | 0.50 | 1 | -0.25 | 15 | -3.75 | | | Akopyan, Harutyun | f | | 2213 | USA | 0.50 | 1 | 0.22 | 15 | 3.30 | |
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 | | 7th Metropolitain Chess FIDE Qualifier | Los Angeles, California | USA | 2011-07-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2030 | 2044 | 2.00 | 4 | -0.08 | 15 | -1.20 | |
| | Robertson, Matthew | | | 2055 | USA | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Tatum, Kofi Odell | | | 1995 | USA | 0.50 | 1 | -0.07 | 15 | -1.05 | | | Kudryavtsev, Vadim | | | 2105 | RUS | 0.50 | 1 | 0.08 | 15 | 1.20 | | | Wheeler, Cameron | | | 1966 | USA | 0.50 | 1 | -0.11 | 15 | -1.65 | |
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) | | | NOTE: K factor changed | | 8th Metropolitain Chess FIDE Qualifier | Los Angeles, California | USA | 2011-07-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1951 | 2044 | 1.50 | 3 | -0.37 | 15 | -5.55 | |
| | Sobel, Simone | | | 1876 | USA | 0.00 | 1 | -0.72 | 15 | -10.80 | | | Polsky, Ryan | | | 1888 | USA | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Xia, Yusheng | | | 2088 | USA | 0.50 | 1 | 0.06 | 15 | 0.90 | |
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) | | | NOTE: K factor changed | | 9th Metropolitan Chess FIDE Qualifier | Los Angeles, CA | USA | 2011-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1876 | 2044 | 0.50 | 1 | -0.22 | 15 | -3.30 | |
| | Sobel, Simone | | | 1876 | USA | 0.50 | 1 | -0.22 | 15 | -3.30 | |
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 | | 1st Metropolitan Chess FIDE International | Los Angeles, CA | USA | 2011-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2121 | 2044 | 2.00 | 9 | -1.63 | 15 | -24.45 | |
| | Liou, Yian | | | 2299 | USA | 0.50 | 1 | 0.31 | 15 | 4.65 | | | Abrahamyan, Tatev | | wg | 2343 | USA | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Sinanan, Joshua C | | | 2273 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Melekhina, Alisa | f | wm | 2263 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Kleinman, Michael | | | 2221 | CAN | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Hamzah, Amier | c | | 1723 | MAS | 0.50 | 1 | -0.37 | 15 | -5.55 | | | Zepeda, Lorena M | | wm | 2187 | ESA | 0.50 | 1 | 0.19 | 15 | 2.85 | | | Anderson, Michael | | | 1862 | USA | 0.00 | 1 | -0.74 | 15 | -11.10 | | | Viswanadha, Kesav | | | 1919 | USA | 0.50 | 1 | -0.17 | 15 | -2.55 | |
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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