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Individual Calculations April 2009 |
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| Marshall, Abby Total change: -19.20 | |   |
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| 41st Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2170 | 2194 | 0.50 | 3 | -1.10 | 15 | -16.50 | |
|  Greanias, Steven D | | | 2140 | USA | 0.50 | 1 | -0.08 | 15 | -1.20 | |  Hilton, Jonathan L | | | 2194 | USA | 0.00 | 1 | -0.50 | 15 | -7.50 | | | Markzon, Gregory | f | | 2177 | USA | 0.00 | 1 | -0.52 | 15 | -7.80 | |
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) | | | | 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2127 | 2194 | 1.00 | 2 | -0.18 | 15 | -2.70 | |
| | Karell, Leif Kazuo | | | 2028 | USA | 0.50 | 1 | -0.22 | 15 | -3.30 | | | Hulse, Brian | | | 2225 | USA | 0.50 | 1 | 0.04 | 15 | 0.60 | |
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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