This page explains how Ethan Jiao (USATT# 271482)'s rating went from 838 to 807 at the HITTA Weekly League event from 19 Aug 2022. 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.