This page explains how Amber G Liu (USATT# 212114)'s rating went from 2040 to 2019 at the Barbara Wurster Memorial Open held on 14 May 2021 - 15 May 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.