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Individual Calculations March 2011 |
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| Richman, Jonathan Total change: -101.75 | |   |
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| 37th Annual Eastern Open | Washington DC | USA | 2010-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2005 | 2123 | 2.50 | 7 | -2.05 | 25 | -51.25 | |
|  Collier, Philip M | | | 2007 | USA | 0.00 | 1 | -0.66 | 25 | -16.50 | |  Ding, Andrew | | | 2032 | USA | 0.00 | 1 | -0.62 | 25 | -15.50 | | | Perez, Samuel | | | 1794 | USA | 0.50 | 1 | -0.38 | 25 | -9.50 | | | Slack, David | | | 1988 | USA | 1.00 | 1 | 0.32 | 25 | 8.00 | | | De Fotis, Gary C | | | 2066 | USA | 0.00 | 1 | -0.58 | 25 | -14.50 | | | Beckman, Thomas J | | | 2004 | USA | 0.00 | 1 | -0.66 | 25 | -16.50 | | | McNamara, Tanner A | | | 2144 | USA | 1.00 | 1 | 0.53 | 25 | 13.25 | |
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) | | | | 43rd Annual Liberty Bell - U2300 Section | Philadelphia, Pennsylvania | USA | 2011-01-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2083 | 2123 | 2.00 | 6 | -1.31 | 25 | -32.75 | |
| | Hulse, Brian | f | | 2186 | USA | 0.50 | 1 | 0.09 | 25 | 2.25 | | | Mo, Kevin | | | 2017 | USA | 0.00 | 1 | -0.64 | 25 | -16.00 | | | Vilenchuk, Michael | | | 2169 | USA | 0.00 | 1 | -0.44 | 25 | -11.00 | | | Moorthy, Srinivas | | | 1913 | USA | 0.50 | 1 | -0.27 | 25 | -6.75 | | | Widmaier, Marc | | | 2076 | USA | 1.00 | 1 | 0.43 | 25 | 10.75 | | | Evans, Cory A | | | 2135 | USA | 0.00 | 1 | -0.48 | 25 | -12.00 | |
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) | | | | 2011 Marshall January Grand Prix | New York, New York | USA | 2011-01-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2272 | 2123 | 0.00 | 2 | -0.61 | 25 | -15.25 | |
| | Bonin, Jay R | m | | 2309 | USA | 0.00 | 1 | -0.26 | 25 | -6.50 | | | Resika, Nathan | f | | 2234 | USA | 0.00 | 1 | -0.35 | 25 | -8.75 | |
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) | | | | 2011 New York February Open | New York, New York | USA | 2011-02-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2098 | 2123 | 1.50 | 3 | -0.10 | 25 | -2.50 | |
| | Korley, Kassa | f | | 2303 | USA | 0.00 | 1 | -0.26 | 25 | -6.50 | | | Frumkin, Edward A | | | 1962 | USA | 0.50 | 1 | -0.21 | 25 | -5.25 | | | Kreitner, Ilan | | | 2030 | USA | 1.00 | 1 | 0.37 | 25 | 9.25 | |
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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