This page explains how Mark Nordby (USATT# 8741)'s rating went from 2133 to 2159 at the No. Kentucky/Cincinnati 2007 O held on - 6 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.