This page explains how Ragnar E. Fahlstrom (USATT# 46927)'s rating went from 1990 to 1993 at the 2007 San Diego Open held on - 10 Jun 2007. 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.