This page explains how Henry Blankenship (USATT# 4284)'s rating went from 1803 to 1781 at the Tri-City Spring RR held on - 18 Apr 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.