This page explains how James R. Morris (USATT# 8495)'s rating went from 1781 to 1764 at the 15th Annual Decatur Open held on - 19 Aug 2006. 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.