This page explains how Don Cordes (USATT# 221380)'s rating went from 998 to 952 at the LRTTC Monthly Tournament League event from 28 Jul 2018. 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.