Individual Calculations July 2009
 Bartron, Paul  Total change: -11.55  Rating chartPersonal card
 2009 Washington Open Spokane, Washington USA 2009-05-23
RcRownchangeKK*chgGame
 2100 2206 0.50 2 -0.77 15 -11.55 
  Chen, Howard 2189 USA0.501-0.0215-0.30 
  Harmon-Vellotti, Luke 2011 USA0.001-0.7515-11.25 

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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