This page explains how John J. Monaco (USATT# 51120)'s rating went from 1990 to 2009 at the Killerspin Holiday Open held on - 30 Dec 2007. 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.