This page explains how Michael Zhang (USATT# 89100)'s rating went from 2191 to 2163 at the Westchester June 2022 Open held on 25 Jun 2022 - 26 Jun 2022. 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.