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Individual Calculations March 2010 |
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| Friedel, Joshua Ed Total change: -6.10 | |   |
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| 19th Annual North American Open | Las Vegas, Nevada | USA | 2009-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2304 | 2551 | 4.50 | 6 | -0.18 | 10 | -1.80 | |
|  Schill, William J | f | | 2229 | USA | 0.00 | 1 | -0.87 | 10 | -8.70 | |  Heung, Christopher | | | 2151 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Anderson, Renard W | f | | 2213 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Lein, Anatoly Y | g | | 2301 | USA | 1.00 | 1 | 0.19 | 10 | 1.90 | | | Zierk, Steven C | f | | 2306 | USA | 1.00 | 1 | 0.20 | 10 | 2.00 | | | Akobian, Varuzhan | g | | 2624 | USA | 0.50 | 1 | 0.10 | 10 | 1.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | | Golden State Open | Concord, California | USA | 2010-01-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2356 | 2549 | 2.50 | 4 | -0.43 | 10 | -4.30 | |
| | Yanayt, Eugene | f | | 2178 | USA | 0.50 | 1 | -0.40 | 10 | -4.00 | | | Zierk, Steven C | f | | 2359 | USA | 1.00 | 1 | 0.25 | 10 | 2.50 | | | Khachiyan, Melikset | g | | 2537 | USA | 0.50 | 1 | -0.02 | 10 | -0.20 | | | Yang, Darwin | f | | 2349 | USA | 0.50 | 1 | -0.26 | 10 | -2.60 | |
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) | | |
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