This page explains how Al L. Miller (USATT# 1551)'s rating went from 1690 to 1639 at the SoCal Open held on - 10 Oct 2004. 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.