This page explains how Robert A. Kyker (USATT# 7485)'s rating went from 1647 to 1610 at the Hutchinson 2007 Fall Open held on - 1 Dec 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.