This page explains how Gerald Whelpley (USATT# 11071)'s rating went from 1518 to 1620 at the AZ PTTC Monday event from 4 Oct 2010. 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.