This page explains how Michael G. Dewynter (USATT# 21312)'s rating went from 1877 to 1862 at the Fairfield September Classic held on - 15 Sep 2001. 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.