This page explains how Sean W Chen (USATT# 211679)'s rating went from 2165 to 2144 at the Westchester February 2020 Open held on 22 Feb 2020 - 23 Feb 2020. 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.