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Individual Calculations September 2009 |
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| Ng, Andrew Total change: 7.95 | |   |
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| 37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2176 | 2103 | 1.50 | 5 | -0.50 | 15 | -7.50 | |
|  Cooke, Eric N | | | 2204 | USA | 0.00 | 1 | -0.36 | 15 | -5.40 | |  Kis, Lorand | | | 2189 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Lamby, Philipp | | | 2265 | GER | 0.00 | 1 | -0.29 | 15 | -4.35 | | | Strenzwilk, Denis | | | 2079 | USA | 0.50 | 1 | -0.03 | 15 | -0.45 | | | Mackinnon, Keith | | | 2145 | CAN | 0.00 | 1 | -0.44 | 15 | -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) | | | | 2009 US Cadet | Crossville, TN | USA | 2009-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2120 | 2113 | 5.50 | 7 | 2.09 | 15 | 31.35 | |
| | Yang, Michael | | | 2052 | USA | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Shen, Victor C | | | 2177 | USA | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Dahl, Matthew D | | | 2088 | USA | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Agarwal, Rohan | | | 2197 | USA | 0.50 | 1 | 0.12 | 15 | 1.80 | | | Pamatmat, Jarod M | | | 2033 | USA | 1.00 | 1 | 0.39 | 15 | 5.85 | | | Tanaka, Christian | | | 2183 | USA | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Aaron, Deepak | | | 2110 | USA | 1.00 | 1 | 0.50 | 15 | 7.50 | |
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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2080 | 2113 | 1.50 | 3 | -0.13 | 15 | -1.95 | |
| | Lagemann, Nathaniel | | | 1968 | USA | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Hughes, Devin L | | | 2052 | USA | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Parry, Matt J | | | 2219 | USA | 0.50 | 1 | 0.14 | 15 | 2.10 | |
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) | | | | Denker Tournament of High School Champions | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2139 | 2113 | 0.00 | 2 | -0.93 | 15 | -13.95 | |
| | Tae, Patrick J | | | 2092 | USA | 0.00 | 1 | -0.53 | 15 | -7.95 | | | Haskel, Jeffrey | | | 2186 | USA | 0.00 | 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) | | |
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