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Individual Calculations September 2009 |
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| Rodriguez, Eric Total change: 18.15 | |   |
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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 |
| 2135 | 2247 | 3.50 | 6 | -0.41 | 15 | -6.15 | |
|  Shvartsman, Andrew | | | 2057 | USA | 1.00 | 1 | 0.25 | 15 | 3.75 | |  Karklins, Andrew | f | | 2232 | USA | 0.50 | 1 | -0.02 | 15 | -0.30 | | | Stancil, Kimani A | | | 2116 | USA | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Anderson, Renard W | f | | 2192 | USA | 1.00 | 1 | 0.42 | 15 | 6.30 | | | Rosenberg, Evan S | | | 2155 | USA | 0.00 | 1 | -0.63 | 15 | -9.45 | | | Pressman, Leif A | | | 2057 | USA | 0.00 | 1 | -0.75 | 15 | -11.25 | |
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 Class Championships | Boca Raton, Florida | USA | 2009-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2221 | 2245 | 2.50 | 3 | 0.90 | 15 | 13.50 | |
| | Daly, Troy | | | 2101 | USA | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Lugo, Blas | m | | 2380 | USA | 1.00 | 1 | 0.68 | 15 | 10.20 | | | Boas, Toby | | | 2183 | 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) | | | | 17th Annual Southern Open | Kissimmee, Florida | USA | 2009-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2171 | 2245 | 2.50 | 3 | 0.72 | 15 | 10.80 | |
| | Acor, Corey | | | 2248 | USA | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Heung, Christopher | | | 2020 | USA | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Cruz, Dario | | | 2245 | CUB | 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) | | |
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