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Individual Calculations March 2012 |
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| Helfst, Matt D Total change: -13.80 | |   |
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| 21st Annual North American Open - Open Section | Las Vegas, Nevada | USA | 2011-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2134 | 1942 | 1.00 | 5 | -0.41 | 15 | -6.15 | |
|  Rodriguez, Eric O | f | | 2342 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Zenyuk, Iryna | c | wm | 2234 | USA | 0.00 | 1 | -0.15 | 15 | -2.25 | |  Fajardo Ponce, David | | | 1748 | HON | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Kelley, Dereque D | | | 2231 | USA | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Shetty, Atulya A | | | 2116 | 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) | | | | 2012 Northern California International | Fremont, California | USA | 2012-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2187 | 1943 | 1.50 | 8 | -0.13 | 15 | -1.95 | |
| | Piasetski, Leon | m | | 2305 | CAN | 0.00 | 1 | -0.10 | 15 | -1.50 | | | Manvelyan, Hayk | | | 2202 | USA | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Liou, Yian | | | 2283 | USA | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Xiong, Jeffery | f | | 2097 | USA | 0.00 | 1 | -0.29 | 15 | -4.35 | | | Gaffagan, Steven | | | 2071 | USA | 1.00 | 1 | 0.67 | 15 | 10.05 | | | Inumerable, Florentino | | | 2154 | USA | 0.50 | 1 | 0.27 | 15 | 4.05 | | | Gurevich, Daniel | | | 2192 | USA | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Haessel, Dale | f | | 2190 | CAN | 0.00 | 1 | -0.19 | 15 | -2.85 | |
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) | | | | Land of the Sky XXV | Asheville, North Carolina | USA | 2012-01-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2200 | 1943 | 0.00 | 2 | -0.38 | 15 | -5.70 | |
| | Simpson, Ronald | f | | 2255 | USA | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Harris, Neal D | | | 2145 | USA | 0.00 | 1 | -0.24 | 15 | -3.60 | |
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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