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Individual Calculations March 2011 |
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| Pressman, Leif A Total change: 30.60 | |   |
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| 29th Annual Empire City Open | New York, New York | USA | 2010-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2110 | 2140 | 1.00 | 3 | -0.62 | 15 | -9.30 | |
|  Bierkens, Pieter A | | | 2153 | USA | 1.00 | 1 | 0.52 | 15 | 7.80 | |  Kats, Alena | | | 2068 | USA | 0.00 | 1 | -0.60 | 15 | -9.00 | | | West, James R | | | 2110 | USA | 0.00 | 1 | -0.54 | 15 | -8.10 | |
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 Open | Philadelphia, Pennsylvania | USA | 2011-01-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2350 | 2167 | 2.00 | 4 | 0.83 | 15 | 12.45 | |
| | Esserman, Marc R | m | | 2412 | USA | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Bodek, Michael H | | | 2163 | USA | 1.00 | 1 | 0.49 | 15 | 7.35 | | | Shabalov, Alexander | g | | 2567 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Zenyuk, Iryna | c | wm | 2256 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | * 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) | | | | 2011 Marshall January Grand Prix | New York, New York | USA | 2011-01-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2125 | 2167 | 3.50 | 4 | 1.27 | 15 | 19.05 | |
| | Kopiecki, Edward P | | | 2033 | USA | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Ray, Sarathi | | | 2070 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Black Jr, James A | | | 2089 | USA | 1.00 | 1 | 0.39 | 15 | 5.85 | | | Bonin, Jay R | m | | 2309 | USA | 0.50 | 1 | 0.19 | 15 | 2.85 | |
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) | | | | 2011 New York February Open | New York, New York | USA | 2011-02-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2185 | 2167 | 2.50 | 4 | 0.56 | 15 | 8.40 | |
| | Margiotta, Jason J | | | 1992 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Maltese, Adam S | | | 2241 | USA | 0.50 | 1 | 0.10 | 15 | 1.50 | | | Lapshun, Yury | m | | 2434 | USA | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Berg, George P | | | 2074 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | |
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) | | |
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