This page explains how Ling Fan (USATT# 73523)'s rating went from 1969 to 1909 at the Charlotte Loopalalooza held on 8 Oct 2016 - 9 Oct 2016. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.