This page explains how Ronald Cassidy (USATT# 30857)'s rating went from 1167 to 1167 at the Schaumburg August Open held on - 27 Aug 2005. 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.