This page explains how Michal Reterski (USATT# 34963)'s rating went from 1653 to 1640 at the Schaumberg Open held on - 20 May 2000. 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.