Individual Calculations September 2021
 Ferreiro, Roberto  Total change: -4.80  Rating chartPersonal card
 4th Annual John T. Irwin National Tournament of Senior State Champions Cherry Hill, New Jersey USA 2021-07-31
RcRownchangeKK*chgGame
 2140 2279 3.50 6 -0.48 10 -4.80 
  Carey, Michael P 1908 USA1.0010.10101.00 
  Gibbins, Wilson K 1992 USA1.0010.16101.60 
  Ginsburg, Mark m2315 USA0.5010.05100.50 
  Eckert, Doug D f2172 USA0.001-0.6510-6.50 
  Burnett, Ronald Wayne m2325 USA0.5010.06100.60 
  Joelson, Daniel 2126 USA0.501-0.2010-2.00 

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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