This page explains how Ethan McBride (USATT# 77854)'s rating went from 1459 to 1456 at the North Dallas League event from 18 Nov 2010. 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.