This page explains how Andrew Bui (USATT# 224217)'s rating went from 1664 to 1654 at the Westchester August 2021 Little Open held on 28 Aug 2021 - 29 Aug 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.