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Individual Calculations April 2009 |
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| Parry, Matt J Total change: 3.60 | |   |
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| 18th Annual North American Open | Las vegas, Nevada | USA | 2008-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2292 | 2261 | 2.50 | 5 | 0.14 | 15 | 2.10 | |
|  Cicak, Slavko | g | | 2564 | SWE | 0.00 | 1 | -0.14 | 15 | -2.10 | |  Heung, Christopher | | | 1946 | USA | 0.50 | 1 | -0.36 | 15 | -5.40 | | | Becerra, Julio J | g | | 2602 | USA | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Brownscombe, Tom | f | | 2196 | USA | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Tanaka, Christian | | | 2152 | USA | 1.00 | 1 | 0.35 | 15 | 5.25 | |
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) | | | | 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2311 | 2225 | 2.50 | 4 | 0.95 | 15 | 14.25 | |
| | Esserman, Marc R | | | 2345 | USA | 1.00 | 1 | 0.66 | 15 | 9.90 | | | Thaler, Michael | | | 2217 | USA | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Molner, Mackenzie | | | 2394 | USA | 0.50 | 1 | 0.22 | 15 | 3.30 | | | Critelli, James | f | | 2286 | USA | 1.00 | 1 | 0.58 | 15 | 8.70 | |
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) | | | | 18th Annual Eastern Class Championships | Sturbridge, Massachusetts | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2277 | 2225 | 0.00 | 2 | -0.85 | 15 | -12.75 | |
| | Mandizha, Farai | f | | 2332 | ZIM | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Cherniack, Alex | | | 2222 | USA | 0.00 | 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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