Individual Calculations September 2011
 Mathys Jr, David A  Total change: 5.40  Rating chartPersonal card
 112th Annual US Open Orlando, Florida USA 2011-07-30
RcRownchangeKK*chgGame
 2078 2005 1.00 2 0.18 30 5.40 
  Mayers, Dan E 1946 USA1.0010.423012.60 
  Perez, Robert 2210 USA0.001-0.2430-7.20 

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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