This page explains how Jimmy Dorrell (USATT# 60099)'s rating went from 1690 to 1670 at the Waco 2000 Summer RR held on - 26 Aug 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.