This page explains how Simen Potaychuk (USATT# 21163)'s rating went from 2003 to 1999 at the 2013 Arizona Closed held on - 28 Apr 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.