This page explains how William Zhang (USATT# 21141)'s rating went from 957 to 913 at the 2015 DFWTT Fall Open held on - 7 Nov 2015. 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.