This page explains how Brian Hutchins-Knowle (USATT# 62550)'s rating went from 1601 to 1597 at the Sam Lima Memorial held on - 6 Sep 1998. 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.