This page explains how Walt Soffer (USATT# 36774)'s rating went from 1666 to 1689 at the 2010 Rochester New York Open held on - 21 Feb 2010. 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.