This page explains how Thomas Fersch (USATT# 219939)'s rating went from 2069 to 2066 at the San Francisco Bay Area CLC event from 5 Oct 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.