This page explains how Brian Hutchins-Knowle (USATT# 62550)'s rating went from 1741 to 1721 at the WCTTA Saturday League event from 12 Nov 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.