This page explains how Yichi Zhang (USATT# 89328)'s rating went from 2579 to 2574 at the Chicago TableTennis League held on 17 Dec 2017 - 4 Apr 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.