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Individual Calculations September 2009 |
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| Rosen, Eric S Total change: 48.60 | |   |
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| 21st NA FIDE Invitational | Skokie, Illinois | USA | 2009-06-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2280 | 2142 | 4.00 | 9 | 1.11 | 15 | 16.65 | |
|  Morales, Garcia Sergi | f | | 2277 | MEX | 0.00 | 1 | -0.32 | 15 | -4.80 | |  Pasalic, Mehmed | m | | 2365 | GER | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Shankar, Gauri | f | | 2278 | IND | 1.00 | 1 | 0.68 | 15 | 10.20 | | | Felecan, Florin | f | | 2369 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Dean, Jim H | f | | 2232 | USA | 0.50 | 1 | 0.12 | 15 | 1.80 | | | Flaga, Krzysztof | | | 2038 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Young, Angelo | m | | 2350 | PHI | 0.50 | 1 | 0.27 | 15 | 4.05 | | | Vishnuvardhan, Arjun | m | | 2307 | IND | 0.50 | 1 | 0.22 | 15 | 3.30 | | | Monokroussos, Dennis | f | | 2302 | 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) | | | | 37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2167 | 2142 | 4.50 | 9 | 0.34 | 15 | 5.10 | |
| | Figler, Ilye | f | | 2319 | USA | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Colding, Ernest | | | 2202 | USA | 1.00 | 1 | 0.58 | 15 | 8.70 | | | Treger, Yefim | | | 2185 | USA | 1.00 | 1 | 0.56 | 15 | 8.40 | | | Rogers, Norman | f | | 2240 | USA | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Dzera, Victor | | | 2200 | CAN | 0.00 | 1 | -0.42 | 15 | -6.30 | | | Liu, Jennie S | | | 1843 | USA | 0.50 | 1 | -0.35 | 15 | -5.25 | | | Undrahbuyan, Baasa | | | 2035 | MGL | 1.00 | 1 | 0.35 | 15 | 5.25 | | | Renteria, Jorge | f | | 2268 | COL | 0.50 | 1 | 0.17 | 15 | 2.55 | | | Studen, Damir | | | 2208 | 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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2331 | 2141 | 3.50 | 6 | 1.79 | 15 | 26.85 | |
| | Kraai, Jesse | g | | 2498 | USA | 0.50 | 1 | 0.39 | 15 | 5.85 | | | Antal, Gergely | m | | 2479 | HUN | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Brookshear, Timoth | | | 2041 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Hughes, Tyler B | | | 2278 | USA | 1.00 | 1 | 0.68 | 15 | 10.20 | | | Wasiluk, Kevin M | | | 2220 | USA | 0.00 | 1 | -0.39 | 15 | -5.85 | | | Fedorowicz, John P | g | | 2469 | USA | 1.00 | 1 | 0.87 | 15 | 13.05 | |
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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