This page explains how Billy Joe (USATT# 79440)'s rating went from 1690 to 1683 at the 2012 NJTTC Giant Round Robin held on - 7 Jul 2012. 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.