This page explains how Clem Volpert (USATT# 38067)'s rating went from 1575 to 1566 at the AITTA 2004-2005 event from 3 Oct 2004. 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.