This page explains how Michael Zhang (USATT# 89100)'s rating went from 2079 to 2067 at the LYTTC CTTA Double Fish Cup Tour held on 11 Nov 2017 - 12 Nov 2017. 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.