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Individual Calculations July 2012 |
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| Perez, Robert Total change: 20.40 | |   |
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| 81st Massachusetts Open | Marlboro, Massachusetts | USA | 2012-05-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2404 | 2314 | 2.50 | 4 | 0.97 | 15 | 14.55 | |
|  Ivanov, Alexander | g | | 2526 | USA | 0.50 | 1 | 0.27 | 15 | 4.05 | |  Shmelov, Denys K | | | 2415 | UKR | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Vigorito, David | m | | 2429 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Castaneda, Nelson | f | | 2244 | USA | 1.00 | 1 | 0.40 | 15 | 6.00 | |
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) | | | | 5th New York International - Open Section | New York, New York | USA | 2012-06-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2259 | 2314 | 5.50 | 9 | 0.39 | 15 | 5.85 | |
| | Lopez, Jorge | | | 2090 | COL | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Arnold, Marc Tyler | m | | 2528 | USA | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Leve, Nitai D | | | 2124 | USA | 0.00 | 1 | -0.75 | 15 | -11.25 | | | Ray, Sarathi | | | 2029 | USA | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Mateer, Amanda | | wf | 2097 | USA | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Romanenko, Vladimir | g | | 2466 | BLR | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Wang, Kevin | | | 2171 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Hungaski, Robert | m | | 2507 | USA | 1.00 | 1 | 0.75 | 15 | 11.25 | | | Ostrovskiy, Aleksandr | f | | 2322 | USA | 0.50 | 1 | 0.01 | 15 | 0.15 | |
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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