This page explains how Kodi Vonderau (USATT# 77003)'s rating went from 827 to 873 at the 2009 Indiana State Closed Cham held on - 19 Apr 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.