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Individual Calculations April 2009 |
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| Markzon, Gregory Total change: 26.40 | |   |
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| 41st Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2174 | 2177 | 3.50 | 5 | 0.98 | 15 | 14.70 | |
|  Katz, Michael S | | | 2216 | USA | 0.50 | 1 | 0.05 | 15 | 0.75 | |  Samimi, Sohrab | | | 2139 | USA | 0.00 | 1 | -0.55 | 15 | -8.25 | | | Marshall, Abby | | wf | 2194 | USA | 1.00 | 1 | 0.52 | 15 | 7.80 | | | Ellenbogen, Michael J | | | 2139 | USA | 1.00 | 1 | 0.45 | 15 | 6.75 | | | Fayvinov, Zakhar | f | | 2181 | USA | 1.00 | 1 | 0.51 | 15 | 7.65 | |
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 |
| 2348 | 2177 | 2.00 | 4 | 0.78 | 15 | 11.70 | |
| | Kacheishvili, Gior | g | | 2527 | GEO | 0.50 | 1 | 0.39 | 15 | 5.85 | | | Uesugi, Shinsaku | | | 2243 | JPN | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Higgins, Derrick | | | 2134 | USA | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Schneider, Dmitry | m | | 2487 | USA | 0.00 | 1 | -0.14 | 15 | -2.10 | |
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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