This page explains how Yuqiao Zou (USATT# 97597)'s rating went from 1796 to 1784 at the Westchester January 2019 Open held on 26 Jan 2019 - 27 Jan 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.