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Individual Calculations September 2011 |
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| Ng, Andrew Total change: 19.05 | |   |
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| 2011 North American Youth Championship - U18 Open | Tarrytown, New York | USA | 2011-06-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2080 | 2138 | 5.00 | 6 | 1.55 | 15 | 23.25 | |
|  Steinberg, Maxwell | | | 1971 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | |  Kats, Alena | | | 2092 | USA | 0.00 | 1 | -0.56 | 15 | -8.40 | | | Liu, Bingjie | | | 2032 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Eng, Randel | | | 1964 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Vilenchuk, Michael | | | 2186 | USA | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Fikiet, Alex M | | | 2233 | USA | 1.00 | 1 | 0.63 | 15 | 9.45 | |
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) | | | | 39th Annual World Open - U2400 Section | Philadelphia, Pennsylvania | USA | 2011-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2144 | 2138 | 4.00 | 9 | -0.42 | 15 | -6.30 | |
| | Itkis, Hana | | wf | 2044 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Pressman, Leif A | | | 2230 | USA | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Barnett, Alex | | | 2269 | USA | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Markovits, Alex | | | 2107 | USA | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Marmont, Benjamin | | | 2136 | USA | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Getz, Shelby D | f | | 2288 | USA | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Webb, Matthew D | | | 2088 | ENG | 1.00 | 1 | 0.43 | 15 | 6.45 | | | Hua, David A | | | 2040 | USA | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Black Jr, James A | | | 2094 | USA | 0.00 | 1 | -0.56 | 15 | -8.40 | |
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 US Junior Open - U21 Section | Houston, Texas | USA | 2011-07-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2159 | 2121 | 1.50 | 3 | 0.14 | 15 | 2.10 | |
| | Harper, Warren T. | f | | 2320 | USA | 1.00 | 1 | 0.76 | 15 | 11.40 | | | Michaelides, Matthew | | | 2088 | USA | 0.00 | 1 | -0.55 | 15 | -8.25 | | | Shao, Bob S | | | 2069 | USA | 0.50 | 1 | -0.07 | 15 | -1.05 | |
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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