This page explains how Robert Douglas Brickell (USATT# 4443)'s rating went from 1834 to 1823 at the NY Open Circuit - Walt Stephen held on - 23 Jan 1999. 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.