This page explains how Michael G. Dewynter (USATT# 21312)'s rating went from 1821 to 1808 at the Fairfield July Open held on - 27 Jul 2002. 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.