This page explains how Jim Hayford (USATT# 6526)'s rating went from 1785 to 1817 at the Windsor Vermont April 1999 Gia held on - 3 Apr 1999. 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.