This page explains how John David Starr (USATT# 10239)'s rating went from 1607 to 1653 at the Irving RR - TX held on - 18 Feb 2001. 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.