This page explains how Steven Tan (USATT# 88433)'s rating went from 2209 to 2201 at the Westchester Two-Person Teams Championship held on 4 Sep 2021 - 6 Sep 2021. 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.