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Individual Calculations December 2015 |
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| Barrett, Ariel Total change: 32.40 | |   |
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| 47th Jamaica Open Championship | Kingston, Jamaica | JAM | 2015-10-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1875 | 1752 | 3.00 | 4 | 1.62 | 20 | 32.40 | |
|  Whyms, Chappell | | | 1600 | BAH | 1.00 | 1 | 0.30 | 20 | 6.00 | | | Diedrick, Michael | | | 1922 | JAM | 1.00 | 1 | 0.72 | 20 | 14.40 | |  Wisdom, Daren | | | 2001 | JAM | 1.00 | 1 | 0.81 | 20 | 16.20 | | | Richards, Deborah | | wm | 1978 | JAM | 0.00 | 1 | -0.21 | 20 | -4.20 | |
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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