This page explains how Charles M. Cavicchio (USATT# 43640)'s rating went from 1609 to 1631 at the Rhode Island Summer Open 2004 held on - 15 Aug 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.