This page explains how Billy Joe (USATT# 79440)'s rating went from 1211 to 1175 at the NJTTC 2010 September Open held on - 26 Sep 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.