Individual Calculations July 2009
 Kelley, Dereque D  Total change: 0.75  Rating chartPersonal card
 11th Annual Foxwoods Open Mashantucket, Connecticut USA 2009-04-08
RcRownchangeKK*chgGame
 2303 2149 4.00 9 1.24 15 18.60 
  Kraiouchkine, Nikiita 2081 CAN1.0010.41156.15 
  Sammour Hasbun, Jorge f2460 PLE0.001-0.1415-2.10 
  Zierk, Steven C 2296 USA0.5010.20153.00 
  Thaler, Michael 2238 USA0.5010.12151.80 
  Jiang, Louie 2266 CAN1.0010.66159.90 
  Zlotnikov, Mikhail m2324 USA1.0010.731510.95 
  Stopa, Jacek m2471 POL0.001-0.1315-1.95 
  Rodriguez, Eric 2247 USA0.001-0.3715-5.55 
  Morshedi, Ali f2347 USA0.001-0.2415-3.60 

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)
 
 2009 Washington Open Spokane, Washington USA 2009-05-23
RcRownchangeKK*chgGame
 2235 2149 0.50 3 -0.68 15 -10.20 
  Donaldson, John m2409 USA0.001-0.1815-2.70 
  Rupel, David 2107 USA0.501-0.0615-0.90 
  Chen, Howard 2189 USA0.001-0.4415-6.60 

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)
 
 2009 National Open Las Vegas, Nevada USA 2009-06-05
RcRownchangeKK*chgGame
 2360 2149 0.00 2 -0.51 15 -7.65 
  Kraai, Jesse g2488 USA0.001-0.1215-1.80 
  Yang, Darwin f2231 USA0.001-0.3915-5.85 

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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