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Individual Calculations September 2011 |
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| Friedman, David M Total change: -8.40 | |   |
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| 2011 FIDE Continental America's Amateur Chess Championship | Rosemont, Illinois | USA | 2011-07-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2035 | 1944 | 0.50 | 3 | -0.66 | 15 | -9.90 | |
|  Pamatmat, Jarod M | | | 2136 | USA | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Girardo, Christopher | | | 1782 | USA | 0.50 | 1 | -0.21 | 15 | -3.15 | |  Yang, Michael | | | 2187 | USA | 0.00 | 1 | -0.20 | 15 | -3.00 | |
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) | | | | 2011 Cleveland Open | Cleveland, Ohio | USA | 2011-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1848 | 1944 | 0.00 | 1 | -0.63 | 15 | -9.45 | |
| | Song, Edward | | | 1848 | CAN | 0.00 | 1 | -0.63 | 15 | -9.45 | |
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) | | | | 2011 YerMorr | North Olmsted, Ohio | USA | 2011-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2114 | 1944 | 2.50 | 6 | 0.73 | 15 | 10.95 | |
| | Yermolinsky, Alex | g | | 2344 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Mikesell, Cory | | | 2111 | USA | 1.00 | 1 | 0.72 | 15 | 10.80 | | | Rust, Lary | | | 1914 | USA | 1.00 | 1 | 0.46 | 15 | 6.90 | | | Smarty, Sylvester | | | 2122 | USA | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Weaver, Benjamin W | | | 2065 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Wright, William B | | | 2128 | USA | 0.00 | 1 | -0.26 | 15 | -3.90 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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