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Individual Calculations May 2011 |
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| Friedman, Josef I Total change: 4.35 | |   |
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| 2011 World Amateur Team & US Team East | Parsippany, New Jersery | USA | 2011-02-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2110 | 2178 | 3.00 | 4 | 0.65 | 15 | 9.75 | |
|  Ostrovskiy, Anatoliy | | | 1963 | USA | 1.00 | 1 | 0.23 | 15 | 3.45 | |  Swaminathan, Rahul | | | 2106 | USA | 1.00 | 1 | 0.40 | 15 | 6.00 | | | Samuelson, Andrew | | | 2165 | USA | 0.00 | 1 | -0.52 | 15 | -7.80 | | | Radomskyj, Peter | | | 2207 | USA | 1.00 | 1 | 0.54 | 15 | 8.10 | |
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) | | | | 2nd Annual Philadelphia Open | Philadelphia, Pennsylvania | USA | 2011-04-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2191 | 2178 | 2.00 | 5 | -0.36 | 15 | -5.40 | |
| | Mulyar, Michael A | m | | 2396 | USA | 0.50 | 1 | 0.28 | 15 | 4.20 | | | Holt, Conrad | f | | 2408 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Ostrovskiy, Aleksandr | f | | 2295 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Richman, Jonathan | | | 2021 | USA | 0.00 | 1 | -0.71 | 15 | -10.65 | | | Reis, Virginia L | | | 1835 | BRA | 1.00 | 1 | 0.12 | 15 | 1.80 | |
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) | | |
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