Individual Calculations September 2010
 McLaren, Sean P  Total change: -25.25  Rating chartPersonal card
 111th Annual US Open - Jerry Hanken Memorial Irvine, California USA 2010-07-31
RcRownchangeKK*chgGame
 2025 2031 0.00 2 -1.01 25 -25.25 
  Moussa, Alaa-Addin c2196 PLE0.001-0.2825-7.00 
  Dyberg, Rick 1853 USA0.001-0.7325-18.25 

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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