This page explains how George Ernest Holz (USATT# 6758)'s rating went from 1815 to 1797 at the NJTTC Monday League event from 14 Feb 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.