This page explains how Robert Spitzer (USATT# 27003)'s rating went from 1630 to 1575 at the 9th FIT Open TT Championships held on - 26 Oct 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.