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Individual Calculations May 2010 |
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| Ostrovskiy, Aleksandr Total change: 48.60 | |   |
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| 40th Annual World Amateur Team & US Tean East | Parsippany, New Jersey | USA | 2010-02-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2282 | 2158 | 3.50 | 4 | 2.11 | 15 | 31.65 | |
|  Feuerstein, Arthur | | | 2112 | USA | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Rubenchik, Rodion | f | | 2307 | USA | 1.00 | 1 | 0.70 | 15 | 10.50 | |  Palatnik, Semion | g | | 2473 | USA | 0.50 | 1 | 0.36 | 15 | 5.40 | | | Greenberg, Roy | | | 2236 | USA | 1.00 | 1 | 0.61 | 15 | 9.15 | |
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) | | | | New York March Open | New York, New York | USA | 2010-03-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1981 | 2205 | 2.00 | 3 | -0.34 | 15 | -5.10 | |
| | Margiotta, Jason J | | | 2011 | USA | 0.00 | 1 | -0.75 | 15 | -11.25 | | | Robinson, Darrian | | | 1910 | USA | 1.00 | 1 | 0.15 | 15 | 2.25 | | | Rabin, Evan Z | | | 2021 | USA | 1.00 | 1 | 0.26 | 15 | 3.90 | |
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) | | | | Philadelphia Open | Philadelphia, Pennsylvania | USA | 2010-03-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2194 | 2205 | 5.00 | 7 | 1.47 | 15 | 22.05 | |
| | Nieto, Guillermo Luigi | | | 1839 | COL | 0.00 | 1 | -0.90 | 15 | -13.50 | | | Paulina, David | | | 2075 | USA | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Weiss, Seggev | | | 2053 | ISR | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Uesugi, Shinsaku | f | | 2323 | JPN | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Bonin, Jay R | m | | 2334 | USA | 1.00 | 1 | 0.67 | 15 | 10.05 | | | Young, Angelo | m | | 2334 | PHI | 0.50 | 1 | 0.17 | 15 | 2.55 | | | Uribe, Mauricio A | m | | 2398 | COL | 1.00 | 1 | 0.75 | 15 | 11.25 | |
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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