This page explains how Keith Willard (USATT# 95826)'s rating went from 829 to 825 at the Bloomington Armory Community League event from 16 Mar 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.