This page explains how Michael D. D. Henry (USATT# 6592)'s rating went from 2199 to 2190 at the Brooklyn TTC October Open held on - 28 Oct 2007. 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.