This page explains how Donald C. Hayden (USATT# 51994)'s rating went from 1580 to 1583 at the DavisonFebruary Open held on - 23 Feb 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.