This page explains how David Rosenzweig (USATT# 55035)'s rating went from 2223 to 2259 at the NJTTC February Open held on - 21 Feb 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.