This page explains how Brian Hutchins-Knowle (USATT# 62550)'s rating went from 1651 to 1643 at the The Top Spin Saturday League event from 14 Jan 2012. 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.