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Individual Calculations May 2010 |
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| Cohen, Harry S Total change: -23.70 | |   |
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| 40th Annual World Amateur Team & US Tean East | Parsippany, New Jersey | USA | 2010-02-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2197 | 2096 | 0.50 | 2 | -0.22 | 15 | -3.30 | |
|  Quirke, Jeffrey L | | | 2214 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | |  Wu, Christopher | | | 2180 | USA | 0.00 | 1 | -0.38 | 15 | -5.70 | |
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) | | | | 42nd Annual Virginia Open | McLean, Virginia | USA | 2010-03-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2145 | 2096 | 0.00 | 2 | -0.91 | 15 | -13.65 | |
| | Kaufman, Lawrence | g | | 2406 | USA | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Carroll, William | | | 1883 | USA | 0.00 | 1 | -0.77 | 15 | -11.55 | |
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) | | | | 50th Maryland Open | Rockville, Maryland | USA | 2010-04-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2135 | 2096 | 0.00 | 1 | -0.45 | 15 | -6.75 | |
| | Savage, Allan G | f | | 2135 | USA | 0.00 | 1 | -0.45 | 15 | -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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