This page explains how Bill Vogel (USATT# 3052)'s rating went from 2004 to 1997 at the 2004 Brooklyn September Open held on - 19 Sep 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.