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Individual Calculations April 2009 |
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| Times, Jerald W Total change: 1.80 | |   |
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| 35th Annual Eastern Open | Washington DC | USA | 2008-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2243 | 2202 | 4.00 | 7 | 0.83 | 15 | 12.45 | |
|  Ivanov, Alexander | g | | 2547 | USA | 1.00 | 1 | 0.89 | 15 | 13.35 | |  Betaneli, Alex | f | | 2318 | USA | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Dai, Yang | | | 1991 | USA | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Uesugi, Shinsaku | | | 2222 | JPN | 0.50 | 1 | 0.03 | 15 | 0.45 | | | Getz, Alec | f | | 2222 | USA | 0.00 | 1 | -0.47 | 15 | -7.05 | | | Most, Eric M | | | 2139 | USA | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Shibut, Macon A | f | | 2263 | USA | 0.50 | 1 | 0.08 | 15 | 1.20 | |
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) | | | | 41st Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2312 | 2196 | 1.00 | 4 | -0.46 | 15 | -6.90 | |
| | Bonin, Jay | m | | 2361 | USA | 0.50 | 1 | 0.22 | 15 | 3.30 | | | Kacheishvili, Giorgi | g | | 2546 | GEO | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Guevara, Robert | | | 2103 | USA | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Zenyuk, Iryna | c | wm | 2237 | USA | 0.00 | 1 | -0.44 | 15 | -6.60 | |
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 |
| 2000 | 2196 | 0.50 | 1 | -0.25 | 15 | -3.75 | |
| | Dai, Yang | | | 2000 | USA | 0.50 | 1 | -0.25 | 15 | -3.75 | |
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) | | |
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