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Individual Calculations September 2009 |
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| Magness, Trevor S Total change: 2.85 | |   |
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| 2nd Annual Chicago Class Championships | Oak Brook, Illinois | USA | 2009-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2229 | 2105 | 2.50 | 5 | 0.73 | 15 | 10.95 | |
|  Amanov, Mesgen | g | | 2497 | TKM | 0.00 | 1 | -0.08 | 15 | -1.20 | |  Iwu, Okechukwu Ane | | | 2189 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Betaneli, Alex | f | | 2287 | USA | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Inigo, Aquino | | | 1906 | CAN | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Santarius, Erik F | | | 2267 | USA | 0.50 | 1 | 0.21 | 15 | 3.15 | |
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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2183 | 2105 | 1.00 | 3 | -0.25 | 15 | -3.75 | |
| | Bercys, Salvijus | m | | 2434 | USA | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Rogers, Bradley K | | | 2101 | USA | 1.00 | 1 | 0.49 | 15 | 7.35 | | | Moroney, Timothy M | | | 2014 | USA | 0.00 | 1 | -0.62 | 15 | -9.30 | |
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 |
| 2156 | 2105 | 1.00 | 3 | -0.29 | 15 | -4.35 | |
| | Haskel, Jeffrey | | | 2186 | USA | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Aaron, Deepak | | | 2110 | USA | 0.00 | 1 | -0.49 | 15 | -7.35 | | | Lau, Robert | c | | 2173 | USA | 0.50 | 1 | 0.09 | 15 | 1.35 | |
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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