The United States Chess Federation
www.uschess.org › component › option,com_top_players7. NY. USA. 745. These Top 100 lists are updated every month by the United States Chess Federation. As of the June 2014 list, ages will be as of the first day of the month in which those ratings become official. For example, ages for the December lists will be as of December 1. (For Top 100 lists prior to June 2014, ages are as of the first day ...