This page explains how Rex Harris (USATT# 45842)'s rating went from 1580 to 1565 at the Bloomington Competition and Elite League event from 30 Sep 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.