This page explains how John David Starr (USATT# 10239)'s rating went from 1639 to 1626 at the Houston June Open held on - 6 Jun 1998. 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.