This page explains how Jon Dorn (USATT# 37971)'s rating went from 1949 to 1973 at the Texas Wesleyan Open held on - 21 Jan 2012. 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.