This page explains how Michael J. Scott (USATT# 32171)'s rating went from 1522 to 1521 at the 1998 USATT Nationals held on - 20 Dec 1998. 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.