This page explains how Robert J. Chironna (USATT# 63038)'s rating went from 1229 to 1185 at the NJTTC Monday League event from 16 May 2005. 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.