This page explains how Scott Preiss (USATT# 9201)'s rating went from 1950 to 1920 at the Rocky Mountain State Games held on - 19 Jul 2015. 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.