This page explains how Anna Naumova (USATT# 1173728)'s rating went from 499 to 496 at the Westchester January 2022 Open held on 29 Jan 2022 - 30 Jan 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.