This page explains how Ziwei Shen (USATT# 1166078)'s rating went from 171 to 142 at the Topspin Open League event from 31 May 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.