Individual Calculations July 2023
 Coy, Matthew M  Total change: 35.40  Rating chartPersonal card
 2023 National Open - Under 2300 Las Vegas, NV USA 2023-06-15
RcRownchangeKK*chgGame
 1908 1766 4.00 7 1.77 20 35.40 
  Zeng, Sheena wc1932 USA1.0010.722014.40 
  Starkman, Eric 1898 USA1.0010.682013.60 
  Biyiasas, Theodore 1958 USA0.001-0.2520-5.00 
  Gottumukkala, Ananth 2025 USA0.001-0.1820-3.60 
  Fong, Kevin 1934 USA0.001-0.2820-5.60 
  Welch, Mason 1595 USA1.0010.27205.40 
  Garmendia Vega, Gabriel c2013 CHI1.0010.812016.20 

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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