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Individual Calculations July 2012 |
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| Roberts, Chris Total change: -22.50 | |   |
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| 2012 Western Amateur | Los Angeles, California | USA | 2012-05-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2039 | 1882 | 1.50 | 4 | 0.31 | 30 | 9.30 | |
|  Wolfley, Lawrence | | | 2084 | USA | 0.00 | 1 | -0.24 | 30 | -7.20 | |  Mousseri, Daniel Y | | | 2034 | USA | 0.50 | 1 | 0.20 | 30 | 6.00 | | | Sheng, Joshua | | | 1923 | USA | 1.00 | 1 | 0.56 | 30 | 16.80 | | | Rupel, David G | | | 2113 | USA | 0.00 | 1 | -0.21 | 30 | -6.30 | |
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) | | | | 2012 Lina Grumette Memorial Day Classic | Ontario, California | USA | 2012-05-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2119 | 1882 | 1.00 | 3 | 0.38 | 30 | 11.40 | |
| | Clawitter, Craig | | | 2117 | USA | 0.00 | 1 | -0.21 | 30 | -6.30 | | | Nita, Marian N | | | 2078 | USA | 0.00 | 1 | -0.25 | 30 | -7.50 | | | Raterman, Leo | | | 2161 | USA | 1.00 | 1 | 0.84 | 30 | 25.20 | |
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) | | | | 2012 National Open - U2200 Section | Las Vegas, Nevada | USA | 2012-06-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1891 | 1882 | 0.50 | 4 | -1.44 | 30 | -43.20 | |
| | Li, Ruifeng | c | | 1945 | USA | 0.00 | 1 | -0.41 | 30 | -12.30 | | | Thompson, Buddy | | | 1861 | USA | 0.50 | 1 | -0.03 | 30 | -0.90 | | | Harmon-Vellotti, Carl | | | 1836 | USA | 0.00 | 1 | -0.56 | 30 | -16.80 | | | Sheng, Joshua | | | 1923 | USA | 0.00 | 1 | -0.44 | 30 | -13.20 | |
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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