This page explains how Michael Zhang (USATT# 89100)'s rating went from 1967 to 1919 at the LYTTC Friday Pro League event from 18 Sep 2016. 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.