This page explains how Raymond Kenneth Filz (USATT# 5775)'s rating went from 1651 to 1641 at the Atlanta Giant RR held on - 30 May 2009. 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.