This page explains how Richard L. L. Chang (USATT# 11577)'s rating went from 1112 to 1191 at the Valley of the Sun Open held on - 7 Dec 2014. 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.