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Individual Calculations September 2011 |
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| Rivera, Alberto V Total change: -14.85 | |   |
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| 39th Annual World Open - U2400 Section | Philadelphia, Pennsylvania | USA | 2011-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1946 | 2170 | 2.50 | 4 | -0.60 | 30 | -18.00 | |
|  Viswanadha, Kesav | | | 1919 | USA | 0.00 | 1 | -0.81 | 30 | -24.30 | |  Harmon-Vellotti, Carl | | | 1831 | USA | 1.00 | 1 | 0.12 | 30 | 3.60 | | | De Fotis, Gary C | | | 2032 | USA | 1.00 | 1 | 0.31 | 30 | 9.30 | | | Slomski, Matt | | | 2000 | USA | 0.50 | 1 | -0.22 | 30 | -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) | | | NOTE: K factor changed | | 2011 Manhattan Open - U2300 Section | New York, New York | USA | 2011-08-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2101 | 2170 | 2.00 | 3 | 0.21 | 15 | 3.15 | |
| | Finneran, Michael | | | 2023 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Jenkins, Drake B | | | 2129 | USA | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Margulis, Yevgeniy | | | 2152 | 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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