This page explains how Hai He (USATT# 80044)'s rating went from 1686 to 1682 at the 16th FIT Open held on - 11 Mar 2012. 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.