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Individual Calculations April 2008 |
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| Ostrovskiy, Aleksandr Total change: -78.50 | |   |
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| 91st Annual Marshall Championship | New York, New York | USA | 2007-12-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2151 | 2153 | 2.00 | 6 | -1.06 | 25 | -26.50 | |
|  Sarkar, Justin | m | | 2413 | USA | 0.00 | 1 | -0.18 | 25 | -4.50 | |  Sobo, Henry C | | | 2139 | USA | 0.50 | 1 | -0.02 | 25 | -0.50 | | | Thaler, Michael | | | 2086 | USA | 0.00 | 1 | -0.59 | 25 | -14.75 | | | Katz, Benjamin J | | | 2091 | USA | 0.50 | 1 | -0.09 | 25 | -2.25 | | | Frumkin, Edward A | | | 2029 | USA | 1.00 | 1 | 0.33 | 25 | 8.25 | | | Kopiecki, Edward P | | | 2147 | USA | 0.00 | 1 | -0.51 | 25 | -12.75 | |
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) | | | | 17th Annual North American Open | Las Vegas, NV | USA | 2007-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2186 | 2153 | 0.00 | 4 | -1.81 | 25 | -45.25 | |
| | Rubsamen, Cornelius | | | 2172 | USA | 0.00 | 1 | -0.47 | 25 | -11.75 | | | Small, Gregg | | | 2255 | USA | 0.00 | 1 | -0.36 | 25 | -9.00 | | | Kudryavtsev, Vadim | | | 2174 | RUS | 0.00 | 1 | -0.47 | 25 | -11.75 | | | Ferreira, Henrique | | | 2143 | BRA | 0.00 | 1 | -0.51 | 25 | -12.75 | |
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) | | | | New York February Open | New York, New York | USA | 2008-02-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2332 | 2153 | 0.00 | 1 | -0.27 | 25 | -6.75 | |
| | Figler, Ilye | f | | 2332 | USA | 0.00 | 1 | -0.27 | 25 | -6.75 | |
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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