This page explains how Zongyuan Yuan (USATT# 223056)'s rating went from 1409 to 1409 at the Westchester November 2022 Open held on 19 Nov 2022 - 20 Nov 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.