This page explains how George Guo (USATT# 4780)'s rating went from 2255 to 2249 at the San Francisco Bay Area CLC event from 18 Nov 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.