This page explains how George Guo (USATT# 4780)'s rating went from 2291 to 2258 at the 2023 USATT Michigan State Championships held on 28 Apr 2023 - 30 Apr 2023. 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.