This page explains how Ogden Driggs (USATT# 5464)'s rating went from 1802 to 1798 at the Aurora TTC League event from 16 Apr 2009. 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.