This page explains how Shirley Zhang (USATT# 85208)'s rating went from 1990 to 1946 at the LYTTC Friday Pro League event from 9 Jun 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.