This page explains how Walt Soffer (USATT# 36774)'s rating went from 1746 to 1666 at the Rochester NY Open Giant RR held on - 22 Feb 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.