Individual Calculations July 2009
 Rosen, Eric S  Total change: -1.05  Rating chartPersonal card
 18th Annual Chicago Open - Open Section Wheeling, Illinois USA 2009-05-22
 2212 2142 2.00 5 -0.07 15 -1.05 
  Bradford, Joseph M m2419 USA0.001-0.1715-2.55 
  Boor, Carl B f2291 USA0.001-0.3015-4.50 
  Adu, Oladapo O m2294 NGR0.001-0.3015-4.50 
  Sobo, Henry C 2074 USA1.0010.41156.15 
  Madison, Jeremy M 1981 USA1.0010.29154.35 

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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