25 Jan 2020 - 26 Jan 2020
This page explains how Zhaoqun Zhou (USATT# 4287)'s rating went from 1898 to 1933 at the Westchester January 2020 Open held on 25 Jan 2020 - 26 Jan 2020. The links below take you to pages that describe various aspects of the ratings processor.
The ratings 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.