This page explains how Greg John Kerkow (USATT# 41837)'s rating went from 1829 to 1935 at the St. Joseph Valley Open held on - 7 May 2006. 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.