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Individual Calculations April 2009 |
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| Sherman, David Total change: -18.90 | |   |
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| 35th Annual Eastern Open | Washington DC | USA | 2008-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2230 | 2142 | 1.50 | 5 | -0.41 | 15 | -6.15 | |
|  Figler, Ilye | f | | 2322 | USA | 0.00 | 1 | -0.26 | 15 | -3.90 | |  Dahl, Matthew D | | | 2075 | USA | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Zhao, Parker | | | 2317 | USA | 0.50 | 1 | 0.23 | 15 | 3.45 | | | Uesugi, Shinsaku | | | 2222 | JPN | 0.00 | 1 | -0.39 | 15 | -5.85 | | | Santarius, Erik F | | | 2213 | USA | 0.00 | 1 | -0.40 | 15 | -6.00 | |
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) | | | | 41st Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1925 | 2142 | 0.50 | 2 | -1.04 | 15 | -15.60 | |
| | Swaminathan, Rahul | | | 1998 | USA | 0.00 | 1 | -0.69 | 15 | -10.35 | | | Saperstein, Craig M | | | 1851 | USA | 0.50 | 1 | -0.35 | 15 | -5.25 | |
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 |
| 2286 | 2142 | 0.50 | 1 | 0.19 | 15 | 2.85 | |
| | Critelli, James | f | | 2286 | USA | 0.50 | 1 | 0.19 | 15 | 2.85 | |
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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