This page explains how Charles Shen (USATT# 217235)'s rating went from 1888 to 1885 at the Topspin Huaxia Cup 2019 held on 22 Jun 2019 - 22 Jun 2019. 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.