This page explains how Harry Xin He (USATT# 81571)'s rating went from 1696 to 1691 at the Alabama Closed Team Championship held on - 23 Mar 2013. 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.