Individual Calculations April 2013
 Rosen, Eric S  Total change: 1.80  Rating chartPersonal card
 17th Annual Mid-America Open St Louis, Missouri USA 2013-03-15
 2135 2278 1.50 2 0.12 15 1.80 
  Agrest, Inna wm2199 SWE0.501-0.1115-1.65 
  Paolercio, Anthony D 2071 USA1.0010.23153.45 

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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