This page explains how Charles Shen (USATT# 217235)'s rating went from 1375 to 1305 at the Topspin Open League event from 18 May 2018. 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.