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Individual Calculations September 2009 |
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| Barnett, Alexander Total change: -11.10 | |   |
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| 2nd New York International | New York, NY | USA | 2009-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2273 | 2239 | 3.00 | 8 | -0.66 | 15 | -9.90 | |
|  Barbosa, Oliver A | m | | 2426 | PHI | 0.00 | 1 | -0.26 | 15 | -3.90 | |  Chipkin, Leonard B | | | 2059 | USA | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Maltese, Adam S | | | 2222 | USA | 0.00 | 1 | -0.52 | 15 | -7.80 | | | Kaufman, Raymond | m | | 2276 | USA | 0.50 | 1 | 0.05 | 15 | 0.75 | | | Goikhman, Valentin | | | 2209 | ISR | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Jacobs, Jon | f | | 2307 | USA | 1.00 | 1 | 0.59 | 15 | 8.85 | | | Krush, Irina | m | wg | 2452 | USA | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Yang, Darwin | f | | 2231 | USA | 0.00 | 1 | -0.51 | 15 | -7.65 | |
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) | | | | 37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2174 | 2239 | 4.00 | 7 | -0.09 | 15 | -1.35 | |
| | Luaces, Juan | | | 2141 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Gershenov, Ben | | | 1987 | USA | 0.00 | 1 | -0.81 | 15 | -12.15 | | | Weser, Adam | | | 2098 | USA | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Hughes, Tyler B | | | 2230 | USA | 0.50 | 1 | -0.01 | 15 | -0.15 | | | Mandizha, Farai | f | | 2313 | ZIM | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Boor, Carl B | f | | 2291 | USA | 0.50 | 1 | 0.07 | 15 | 1.05 | | | Rosenberg, Evan S | | | 2155 | USA | 0.50 | 1 | -0.12 | 15 | -1.80 | |
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) | | | | 36th LPO | Winston-Salem, North Carolina | USA | 2009-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2238 | 2236 | 2.00 | 4 | 0.01 | 15 | 0.15 | |
| | Dana, Maurice | | | 2103 | USA | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Rouleau, John | | | 2268 | USA | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Burnett, Ronald | m | | 2368 | USA | 0.50 | 1 | 0.18 | 15 | 2.70 | | | Mabe, Chris J | | | 2214 | USA | 0.00 | 1 | -0.53 | 15 | -7.95 | |
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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