This page explains how Donald E. Larson (USATT# 7564)'s rating went from 1803 to 1793 at the MN Winter Open held on - 26 Feb 1995. 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.