This page explains how Yan He (USATT# 203085)'s rating went from 1550 to 1546 at the San Francisco Bay Area CLC event from 5 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.