This page explains how Doug Wruck (USATT# 10604)'s rating went from 1484 to 1507 at the Schaunburg Spring Open held on - 5 May 2007. 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.