This page explains how Gia Leu (USATT# 17561)'s rating went from 1963 to 1941 at the AZ PTTC Monday event from 24 Feb 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.