This page explains how Charlie Zhao (USATT# 272395)'s rating went from 1213 to 1207 at the Central Carolinas Super League event from 20 Jan 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.