This page explains how Evelyn Chen (USATT# 271696)'s rating went from 652 to 650 at the Westchester September 2022 Open held on 24 Sep 2022 - 25 Sep 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.