This page explains how Robert King (USATT# 3838)'s rating went from 1012 to 1021 at the Bloomington Armory Community League event from 17 Dec 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.