This page explains how Jerry Shang (USATT# 1132146)'s rating went from 674 to 668 at the LYTTC Friday Pro League event from 23 Aug 2019. 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.