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Individual Calculations April 2009 |
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| Yanayt, Eugene Total change: -18.15 | |   |
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| 18th Annual North American Open | Las vegas, Nevada | USA | 2008-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2237 | 2241 | 0.50 | 3 | -1.05 | 15 | -15.75 | |
|  Becerra, Julio J | g | | 2591 | USA | 0.00 | 1 | -0.11 | 15 | -1.65 | |  Heung, Christopher | | | 1946 | USA | 0.50 | 1 | -0.35 | 15 | -5.25 | | | Kudryavtsev, Vadim | | | 2173 | RUS | 0.00 | 1 | -0.59 | 15 | -8.85 | |
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) | | | | 16th Annual Western Class Championshipw | Agoura Hills, California | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2241 | 2225 | 4.00 | 7 | 0.59 | 15 | 8.85 | |
| | Akopian, Robert | | | 2114 | USA | 1.00 | 1 | 0.35 | 15 | 5.25 | | | Khachiyan, Melikset | g | | 2519 | USA | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Agarwal, Rohan | | | 2190 | USA | 1.00 | 1 | 0.45 | 15 | 6.75 | | | Small, Gregg H | | | 2271 | USA | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Lee, Andy C | | | 2240 | USA | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Gutman, Joshua | | | 2133 | USA | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Von Krogh, Christopher | | | 2218 | USA | 1.00 | 1 | 0.49 | 15 | 7.35 | |
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) | | | | 26th Annual U.S Amateur Team West | Woodland Hills, CA | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2222 | 2225 | 1.00 | 4 | -1.06 | 15 | -15.90 | |
| | Sevillano, Enrico | m | | 2512 | USA | 0.50 | 1 | 0.34 | 15 | 5.10 | | | Stevens, Lawrence | | | 2077 | USA | 0.00 | 1 | -0.70 | 15 | -10.50 | | | Hermansen, Ron | | | 2235 | USA | 0.50 | 1 | 0.01 | 15 | 0.15 | | | He, Tianyi | | | 2064 | USA | 0.00 | 1 | -0.71 | 15 | -10.65 | |
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) | | | | Western Chess Congress | Concord, California | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2197 | 2225 | 3.00 | 5 | 0.31 | 15 | 4.65 | |
| | Haring, Ruth Inez | | wm | 2049 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Ginsburg, Mark | m | | 2373 | USA | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Koepcke, Richard W | | | 2240 | USA | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Pupols, Viktors | | | 2192 | USA | 1.00 | 1 | 0.45 | 15 | 6.75 | | | Adelberg, David | | | 2131 | USA | 0.50 | 1 | -0.13 | 15 | -1.95 | |
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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