This page explains how Robert King (USATT# 3838)'s rating went from 1021 to 991 at the Bloomington Armory Community League event from 7 Jan 2013. 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.