This page explains how David Rosenzweig (USATT# 55035)'s rating went from 2169 to 2180 at the NJTTC Monday League event from 27 Apr 2004. 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.