This page explains how Isabella Joy Xu (USATT# 98155)'s rating went from 2071 to 2150 at the 2021 National U11, U13, and U17 Team Trials held on 18 Jun 2021 - 20 Jun 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.