This page explains how Don Husmann (USATT# 20881)'s rating went from n/a to 815 at the New Hampshire Millenium RR Ope held on - 27 Feb 2000. 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.