This page explains how Charles Haynes (USATT# 69676)'s rating went from 1691 to 1645 at the SPINvitational held on - 29 Dec 2008. 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.