This page explains how Eric J. Ziegler (USATT# 88227)'s rating went from 1248 to 1294 at the Valley of the Sun Open held on - 2 Dec 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.