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Individual Calculations May 2011 |
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| Roring, Tres Total change: 39.90 | |   |
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| 2011 Southern Rocky FIDE Open | Albuquerque, New Mexico | USA | 2011-02-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1986 | 1972 | 1.00 | 2 | 0.03 | 15 | 0.45 | |
|  Hatcher, Wayne L | | | 1932 | USA | 1.00 | 1 | 0.44 | 15 | 6.60 | |  Coraretti, Benjamin | | | 2040 | USA | 0.00 | 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) | | | | Bill Wright St Louis Open | St Louis, Missouri | USA | 2011-03-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2166 | 1967 | 2.00 | 3 | 1.25 | 15 | 18.75 | |
| | Eckert, Doug D | f | | 2254 | USA | 0.50 | 1 | 0.34 | 15 | 5.10 | | | Cao, Kevin Y | | | 2103 | USA | 0.50 | 1 | 0.18 | 15 | 2.70 | | | Luther, Ronald G | | | 2141 | USA | 1.00 | 1 | 0.73 | 15 | 10.95 | |
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) | | | | South Houston Open | Houston, Texas | USA | 2011-03-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2183 | 1967 | 1.50 | 2 | 1.03 | 15 | 15.45 | |
| | Michaelides, Evan | | | 2264 | USA | 0.50 | 1 | 0.35 | 15 | 5.25 | | | Michaelides, Matthew | | | 2102 | USA | 1.00 | 1 | 0.68 | 15 | 10.20 | |
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) | | | | 15th Annual Mid-America Open | St Louis, Missouri | USA | 2011-03-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2102 | 1967 | 0.00 | 1 | -0.32 | 15 | -4.80 | |
| | Fast, Nathaniel S | | | 2102 | USA | 0.00 | 1 | -0.32 | 15 | -4.80 | |
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) | | | | 19th Annual Southern Open | Orlando, Florida | USA | 2011-04-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2263 | 1967 | 1.00 | 2 | 0.67 | 15 | 10.05 | |
| | Henley, Ronald W | g | | 2367 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Christensen, Wayne | | | 2158 | USA | 1.00 | 1 | 0.75 | 15 | 11.25 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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