This page explains how Jackie Feng (USATT# 70467)'s rating went from 2065 to 2057 at the LYTTC Friday Pro League event from 23 Jul 2021. 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.