This page explains how Bill Vogel (USATT# 3052)'s rating went from 1884 to 1877 at the 2004 Brooklyn December Open held on - 19 Dec 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.