This page explains how Kenneth K. Quarshie (USATT# 69866)'s rating went from 1506 to 1501 at the NJTTC 2013 January Open held on - 19 Jan 2013. 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.