This page explains how Mac T. Horn (USATT# 6791)'s rating went from 1732 to 1720 at the Austin Fall Round Robin held on - 18 Nov 2000. 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.