This page explains how Kenneth Hartt (USATT# 43643)'s rating went from 1314 to 1307 at the Boston TTC May Open held on - 19 May 2002. 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.