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Individual Calculations October 2008 |
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| Berger, Jacob Total change: -2.50 | |   |
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| 109th Annual US Open | Dallas, Texas | USA | 2008-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2220 | 1949 | 1.00 | 2 | 0.66 | 25 | 16.50 | |
|  Low, Scott T | | | 2229 | USA | 1.00 | 1 | 0.84 | 25 | 21.00 | |  Yu, Corbin Zachary | | | 2211 | 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) | | | | 2008 Denker Tournament of High School Champions | Dallas, Texas | USA | 2008-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2138 | 1949 | 0.00 | 2 | -0.51 | 25 | -12.75 | |
| | Yang, Stanley | | | 2144 | USA | 0.00 | 1 | -0.25 | 25 | -6.25 | | | Zierk, Steven C | | | 2132 | USA | 0.00 | 1 | -0.26 | 25 | -6.50 | |
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) | | | | 4th Okie Chess Festival - Okie Open | Tulsa, Oklahoma | USA | 2008-08-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2138 | 1949 | 0.00 | 1 | -0.25 | 25 | -6.25 | |
| | Steiner, Tim | | | 2138 | USA | 0.00 | 1 | -0.25 | 25 | -6.25 | |
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) | | |
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