This page explains how Norman Williams (USATT# 19535)'s rating went from 1039 to 1147 at the 2007 Michigan Closed held on - 1 Apr 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.