This page explains how Joseph M. Cincotta (USATT# 60505)'s rating went from 1644 to 1620 at the Huntsman World Senior Games held on - 12 Oct 2006. 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.