Individual Calculations September 2015
 Song, Ziyuan (sam)  Total change: -4.80  Rating chartPersonal card
 2015 North American U20 Open Championships Kitchener CAN 2015-07-26
 2018 2031 4.50 9 -0.12 40 -4.80 
  Wang, Kevin f2363 USA0.001-0.1240-4.80 
  Liu, Zhanhe 1753 CAN1.0010.17406.80 
  Shen, Arthur f2339 USA0.001-0.1440-5.60 
  Zhang, Henry 1631  * CAN1.0010.08403.20 
  Li, Ben 2188 USA0.5010.21408.40 
  Sohal, Tanraj 2263 CAN0.001-0.2140-8.40 
  Liang, Hairan 1814 CAN0.501-0.2840-11.20 
  Xu, Jeffrey c1847 CAN0.501-0.2440-9.60 
  Idnani, Taran c1963 USA1.0010.414016.40 
 * Rating difference of more than 400. Please read more at FIDE Handbook

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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