This page explains how Lei Ren (USATT# 90647)'s rating went from 2156 to 2149 at the Westchester April 2022 Open held on 23 Apr 2022 - 24 Apr 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.