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Individual Calculations October 2008 |
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| Zierk, Steven C Total change: 107.75 | |   |
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| 13th Pacific Coast Open | Agoura Hills, California | USA | 2008-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2285 | 2132 | 4.00 | 6 | 2.16 | 25 | 54.00 | |
|  Banawa, Joel | f | | 2300 | USA | 1.00 | 1 | 0.72 | 25 | 18.00 | |  Yanayt, Eugene | f | | 2254 | USA | 1.00 | 1 | 0.67 | 25 | 16.75 | | | Khachiyan, Melikset | g | | 2482 | USA | 0.50 | 1 | 0.39 | 25 | 9.75 | | | Bryant, John D | | | 2225 | USA | 0.00 | 1 | -0.37 | 25 | -9.25 | | | Hermansen, Ron | | | 2244 | USA | 1.00 | 1 | 0.65 | 25 | 16.25 | | | Aghasaryan, Robert | f | | 2202 | ARM | 0.50 | 1 | 0.10 | 25 | 2.50 | |
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) | | | | 109th Annual US Open | Dallas, Texas | USA | 2008-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2222 | 2132 | 2.50 | 5 | 0.55 | 25 | 13.75 | |
| | Kleist, Frederick | | | 2136 | CAN | 1.00 | 1 | 0.51 | 25 | 12.75 | | | Balasubramanian, Adithya | | | 2135 | IND | 1.00 | 1 | 0.50 | 25 | 12.50 | | | Kuderinov, Kirill | m | | 2422 | KAZ | 0.00 | 1 | -0.16 | 25 | -4.00 | | | Blanco, Alvaro | m | | 2332 | MEX | 0.00 | 1 | -0.24 | 25 | -6.00 | | | Gay, Daniel Zachary | | | 2086 | USA | 0.50 | 1 | -0.06 | 25 | -1.50 | |
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 |
| 2034 | 2132 | 1.50 | 2 | 0.24 | 25 | 6.00 | |
| | Berger, Jacob V | | | 1949 | USA | 1.00 | 1 | 0.26 | 25 | 6.50 | | | Shen, Victor C | | | 2118 | USA | 0.50 | 1 | -0.02 | 25 | -0.50 | |
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 CalChess Labor Day Championships | San Francisco, California | USA | 2008-08-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2360 | 2132 | 2.50 | 5 | 1.36 | 25 | 34.00 | |
| | Naroditsky, Alan | | | 2136 | USA | 1.00 | 1 | 0.51 | 25 | 12.75 | | | Bhat, Vinay S | m | | 2482 | USA | 0.50 | 1 | 0.39 | 25 | 9.75 | | | Zilberstein, Dmitry | m | | 2388 | USA | 0.00 | 1 | -0.19 | 25 | -4.75 | | | De Guzman, Ricardo | m | | 2389 | PHI | 1.00 | 1 | 0.82 | 25 | 20.50 | | | Florean, Andrei | m | | 2403 | USA | 0.00 | 1 | -0.17 | 25 | -4.25 | |
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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