This page explains how Allen McDermott (USATT# 8199)'s rating went from 1648 to 1677 at the Colorado Spring Invitational held on - 29 Mar 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.