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Individual Calculations April 2009 |
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| West, James R Total change: -12.90 | |   |
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| Happy New Year Open | New York, New York | USA | 2009-01-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2047 | 2193 | 1.00 | 3 | -1.05 | 15 | -15.75 | |
|  Robinson, Darrian | | | 1914 | USA | 0.00 | 1 | -0.84 | 15 | -12.60 | |  Tuhrim, Richard J | | | 2028 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Margulis, Yevgeni | | | 2200 | USA | 0.00 | 1 | -0.49 | 15 | -7.35 | |
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 |
| 2242 | 2193 | 1.50 | 3 | 0.19 | 15 | 2.85 | |
| | Arnold, Marc Tyler | f | | 2396 | USA | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Rubenchik, Rodion | f | | 2309 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Sugino, Christophe | | | 2022 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | |
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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