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Individual Calculations September 2009 |
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| Obregon, Juan Luis Total change: 8.40 | |   |
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| 14th Annual Bradley Open | Windsor Locks, Connecticut | USA | 2009-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2067 | 2172 | 2.00 | 2 | 0.71 | 15 | 10.65 | |
|  Romero, Steve | | | 2024 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Aaron, Deepak | | | 2110 | USA | 1.00 | 1 | 0.41 | 15 | 6.15 | |
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 |
| 2128 | 2172 | 1.50 | 3 | -0.15 | 15 | -2.25 | |
|  Wasiluk, Kevin M | | | 2220 | USA | 0.50 | 1 | 0.07 | 15 | 1.05 | | | Karklins, Andrew | f | | 2205 | USA | 0.00 | 1 | -0.45 | 15 | -6.75 | | | Berry, Frank K | | | 1958 | USA | 1.00 | 1 | 0.23 | 15 | 3.45 | |
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) | | |
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