This page explains how Kenneth Hartt (USATT# 43643)'s rating went from 1272 to 1250 at the 2004 Rhode Island Open held on - 28 Mar 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.