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Individual Calculations April 2009 |
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| Matikozyan, Andranik Total change: 18.00 | |   |
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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 |
| 2362 | 2462 | 2.00 | 3 | 0.13 | 10 | 1.30 | |
|  Iwamoto, Takashi | f | | 2245 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | |  Small, Gregg H | | | 2240 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Becerra, Julio J | g | | 2602 | USA | 0.00 | 1 | -0.31 | 10 | -3.10 | |
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) | | | | 16th Annual Western Class Championshipw | Agoura Hills, California | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2384 | 2452 | 4.00 | 5 | 1.06 | 10 | 10.60 | |
| | Small, Gregg H | | | 2271 | USA | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Sevillano, Enrico | m | | 2512 | USA | 1.00 | 1 | 0.58 | 10 | 5.80 | | | Khachiyan, Melikset | g | | 2519 | USA | 0.50 | 1 | 0.09 | 10 | 0.90 | | | Hansen, Eric | f | | 2376 | CAN | 0.50 | 1 | -0.10 | 10 | -1.00 | | | Steinfl, Alessandr | | | 2242 | ITA | 1.00 | 1 | 0.23 | 10 | 2.30 | |
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) | | | | 26th Annual U.S Amateur Team West | Woodland Hills, CA | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2155 | 2452 | 4.00 | 4 | 0.61 | 10 | 6.10 | |
| | Gutman, Joshua | | | 2133 | USA | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Tan, Derek J | | | 2143 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | | | Le, Cau Duong | | | 2102 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Steinfl, Alessandro | | | 2242 | ITA | 1.00 | 1 | 0.23 | 10 | 2.30 | |
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) | | |
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