This page explains how Mark J. Hoffman (USATT# 24438)'s rating went from 1094 to 1164 at the Schaumburg Open held on - 23 Aug 2003. 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.