This page explains how Michael Walk (USATT# 10888)'s rating went from 2207 to 2221 at the South Park TTC 50th Anniversar held on - 29 Mar 2008. 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.