This page explains how David Ejeh (USATT# 1183889)'s rating went from 1583 to 1580 at the MdTTC June Open held on - 22 Jun 1997. 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.