This page explains how Michael D. D. Henry (USATT# 6592)'s rating went from 2249 to 2246 at the 2012 JOOLA N. American Teams O held on - 25 Nov 2012. 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.