This page explains how Austin Wu-Duenas (USATT# 88909)'s rating went from 1823 to 1800 at the ICC - Advanced League event from 31 Jul 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.