This page explains how Robert Trudell (USATT# 60358)'s rating went from 1628 to 1615 at the Grand Canyon State 2003 Summer held on - 22 Jun 2003. 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.