This page explains how Winnie Yeung (USATT# 96338)'s rating went from 1874 to 1870 at the San Francisco Bay Area CLC event from 15 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.