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Individual Calculations July 2009 |
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| Zepeda, Lorena Mar Total change: -70.05 | |   |
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| 11th Annual Foxwoods Open | Mashantucket, Connecticut | USA | 2009-04-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2201 | 2179 | 2.00 | 8 | -1.78 | 15 | -26.70 | |
|  Ippolito, Dean J | m | | 2443 | USA | 0.50 | 1 | 0.32 | 15 | 4.80 | |  Getz, Alec | f | | 2229 | USA | 0.50 | 1 | 0.07 | 15 | 1.05 | | | Adu, Oladapo Oluto | m | | 2294 | NGR | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Melekhina, Alisa | | wm | 2287 | USA | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Mandizha, Farai | f | | 2313 | ZIM | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Tuhrim, Richard J | | | 2022 | USA | 0.50 | 1 | -0.21 | 15 | -3.15 | | | Shetty, Atulya A | | | 1972 | USA | 0.00 | 1 | -0.77 | 15 | -11.55 | | | Dygert, Stephen | | | 2048 | USA | 0.00 | 1 | -0.68 | 15 | -10.20 | |
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) | | | | 18th Annual Chicago Open - U2300 Section | Wheeling, Illinois | USA | 2009-05-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1991 | 2179 | 2.00 | 5 | -1.64 | 15 | -24.60 | |
| | McVay, Karsten A | | | 1850 | USA | 0.00 | 1 | -0.88 | 15 | -13.20 | | | Bixel, Carl | | | 2166 | USA | 1.00 | 1 | 0.48 | 15 | 7.20 | | | Hollinberger, Drew | | | 1917 | USA | 0.00 | 1 | -0.82 | 15 | -12.30 | | | Airapetian, Chouchanik | | wf | 2114 | USA | 0.00 | 1 | -0.59 | 15 | -8.85 | | | Yagiz, Bora | | | 1910 | USA | 1.00 | 1 | 0.17 | 15 | 2.55 | |
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) | | | | 2009 National Open | Las Vegas, Nevada | USA | 2009-06-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2132 | 2179 | 1.00 | 4 | -1.25 | 15 | -18.75 | |
| | Bareev, Evgeny | g | | 2529 | RUS | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Adelberg, David | | | 2158 | USA | 0.50 | 1 | -0.03 | 15 | -0.45 | | | He, Tommy O | | | 1829 | USA | 0.50 | 1 | -0.39 | 15 | -5.85 | | | Harmon-Vellotti, Luke | | | 2011 | USA | 0.00 | 1 | -0.72 | 15 | -10.80 | |
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) | | |
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