This page explains how Bill Maguire (USATT# 19763)'s rating went from 1568 to 1554 at the BTTC League event from 18 Jan 2018. 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.