This page explains how Doug Wruck (USATT# 10604)'s rating went from 1667 to 1685 at the 2009 Rochester Team Challenge held on - 25 May 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.