This page explains how Michael G. Dewynter (USATT# 21312)'s rating went from 1806 to 1803 at the Sacramento Winter Open held on - 15 Feb 2003. 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.