Individual Calculations September 2009
 Hermansen, Ron  Total change: -6.90  Rating chartPersonal card
 14th Annual Pacific Coast Open Agoura Hills, California USA 2009-07-16
 2166 2222 3.00 6 -0.46 15 -6.90 
  Sandberg, Evan M 2146 USA0.501-0.1015-1.50 
  Borgen, Richard L 2128 USA1.0010.37155.55 
  Liou, Yian 2134 USA0.001-0.6215-9.30 
  Reynolds, Robert I f2290 USA1.0010.59158.85 
  Gutman, Joshua 2153 USA0.501-0.1015-1.50 
  Kudryavtsev, Vadim 2147 RUS0.001-0.6015-9.00 

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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