This page explains how Allen McDermott (USATT# 8199)'s rating went from 1857 to 1872 at the 2004 Colorado Springs Open held on - 10 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.