This page explains how Felix Shtorper (USATT# 15550)'s rating went from 1718 to 1658 at the Arizona Closed held on - 4 May 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.