This page explains how Gia Leu (USATT# 17561)'s rating went from 1985 to 1970 at the AZ PTTC Monday event from 29 Oct 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.