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Individual Calculations September 2009 |
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| Tuhrim, Richard J Total change: -10.65 | |   |
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| 3rd Annual Philadelphia International | Philadelphia, Pennsylvania | USA | 2009-06-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2245 | 2022 | 3.00 | 8 | 1.15 | 15 | 17.25 | |
|  Mulyar, Michael A | m | | 2372 | USA | 0.50 | 1 | 0.39 | 15 | 5.85 | |  Ng, Gary K | | | 2085 | CAN | 1.00 | 1 | 0.59 | 15 | 8.85 | | | Gareev, Timur | g | | 2372 | UZB | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Naroditsky, Daniel | f | | 2335 | USA | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Mc Cartney, Patrick | | | 2141 | USA | 1.00 | 1 | 0.66 | 15 | 9.90 | | | Rogers, Norman | f | | 2240 | USA | 0.50 | 1 | 0.28 | 15 | 4.20 | | | Studen, Damir | | | 2208 | USA | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Dougherty, Michael | f | | 2203 | CAN | 0.00 | 1 | -0.26 | 15 | -3.90 | |
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 - Open Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2288 | 2022 | 1.50 | 7 | 0.23 | 15 | 3.45 | |
| | Arnold, Marc T | m | | 2372 | USA | 0.50 | 1 | 0.39 | 15 | 5.85 | | | Gurevich, Dmitry | g | | 2372 | USA | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Getz, Alec | f | | 2229 | USA | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Tayar, Jonathan | f | | 2334 | CAN | 0.50 | 1 | 0.36 | 15 | 5.40 | | | Privman, Boris | f | | 2172 | USA | 0.50 | 1 | 0.20 | 15 | 3.00 | | | Zhao, Parker B | | | 2301 | USA | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Thaler, Michael | | | 2238 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | |
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) | | | | 2nd Annual Chicago Class Championships | Oak Brook, Illinois | USA | 2009-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2106 | 2042 | 1.00 | 5 | -1.10 | 15 | -16.50 | |
| | Betaneli, Alex | f | | 2287 | USA | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Vaja, Ashish | | | 2195 | USA | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Inigo, Aquino | | | 1906 | CAN | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Hollinberger, Drew | | | 1960 | USA | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Szpisjak, Steven J | | | 2183 | USA | 0.00 | 1 | -0.31 | 15 | -4.65 | |
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) | | | | 20th Annual Vermont Resort Open | Stratton Mountain, Vermont | USA | 2009-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1983 | 2042 | 0.50 | 2 | -0.64 | 15 | -9.60 | |
| | Sells, Philip Gran | | | 1837 | USA | 0.00 | 1 | -0.76 | 15 | -11.40 | | | Zheng, Haotian | | | 2129 | USA | 0.50 | 1 | 0.12 | 15 | 1.80 | |
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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2331 | 2042 | 0.00 | 2 | -0.35 | 15 | -5.25 | |
| | Shabalov, Alexander | g | | 2442 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Parry, Matt J | | | 2219 | USA | 0.00 | 1 | -0.27 | 15 | -4.05 | | | * 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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