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Individual Calculations April 2009 |
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| Saperstein, Craig M Total change: 19.25 | |   |
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| 35th Annual Eastern Open | Washington DC | USA | 2008-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2140 | 1854 | 1.00 | 5 | 0.19 | 25 | 4.75 | |
|  Mabe, Chris J | | | 2204 | USA | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Ostrovskiy, Aleksander | c | | 2112 | USA | 0.00 | 1 | -0.18 | 25 | -4.50 | |  Beckman, Thomas J | | | 2060 | USA | 0.00 | 1 | -0.24 | 25 | -6.00 | | | Pohl, Klaus A | | | 2187 | USA | 0.50 | 1 | 0.38 | 25 | 9.50 | | | Most, Eric M | | | 2139 | USA | 0.50 | 1 | 0.34 | 25 | 8.50 | |
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 |
| 2135 | 1851 | 1.50 | 4 | 0.85 | 25 | 21.25 | |
| | Pozarek, Stephen J | | | 2164 | USA | 1.00 | 1 | 0.86 | 25 | 21.50 | | | Kis, Lorand B | | | 2181 | USA | 0.00 | 1 | -0.12 | 25 | -3.00 | | | Shvartsman, Andrew N | | | 2053 | USA | 0.00 | 1 | -0.24 | 25 | -6.00 | | | Sherman, David | | | 2142 | USA | 0.50 | 1 | 0.35 | 25 | 8.75 | |
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) | | | | 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1886 | 1851 | 0.50 | 1 | 0.05 | 25 | 1.25 | |
| | Rohde, Daniel | | | 1886 | USA | 0.50 | 1 | 0.05 | 25 | 1.25 | |
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) | | | | 41st Annual Virginia Open | McLean, Virginia | USA | 2009-02-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2138 | 1851 | 0.00 | 2 | -0.32 | 25 | -8.00 | |
| | Larkins, Larry R | | | 2170 | USA | 0.00 | 1 | -0.13 | 25 | -3.25 | | | Guo, Gill Y | | | 2106 | USA | 0.00 | 1 | -0.19 | 25 | -4.75 | |
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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