This page explains how Michael D. D. Henry (USATT# 6592)'s rating went from 2178 to 2171 at the Foothills VIII Gold Dollar Ups held on - 14 Nov 2009. 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.