Individual Calculations July 2009
 Dellaca, Roger  Total change: -11.70  Rating chartPersonal card
 2009 Lina Grumette Memorial Day Classic Los Angeles, California USA 2009-05-23
 2100 2020 0.00 2 -0.78 15 -11.70 
  Williams, John R 2122 USA0.001-0.3615-5.40 
  Yee, Michael Anthony 2078 USA0.001-0.4215-6.30 

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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