This page explains how Hanying Zhang (USATT# 27740)'s rating went from 1796 to 1767 at the 2005 DFW Winter RR held on - 19 Nov 2005. 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.