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Individual Calculations April 2009 |
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| Gershenov, Ben Total change: -12.50 | |   |
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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 |
| 2210 | 1999 | 0.00 | 1 | -0.23 | 25 | -5.75 | |
|  Zaderman, Vitaly | | | 2210 | USA | 0.00 | 1 | -0.23 | 25 | -5.75 | |
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) | | | | Bermuda International Open | hamilton | BER | 2009-01-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2013 | 1999 | 2.00 | 4 | 0.07 | 25 | 1.75 | |
| | Ippolito, Dean | m | | 2349 | USA | 0.00 | 1 | -0.11 | 25 | -2.75 | |  Gal, Louis | | | 1649 | BER | 1.00 | 1 | 0.11 | 25 | 2.75 | | | Sciacca, Patrick | | | 2166 | USA | 0.00 | 1 | -0.28 | 25 | -7.00 | | | Radford, Michael | | | 1887 | BER | 1.00 | 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 |
| 2270 | 1999 | 0.00 | 2 | -0.34 | 25 | -8.50 | |
| | Coleman, Teddy | f | | 2284 | USA | 0.00 | 1 | -0.16 | 25 | -4.00 | | | Williams, Christopher | | | 2256 | USA | 0.00 | 1 | -0.18 | 25 | -4.50 | |
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) | | |
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