This page explains how Tony Nguyen (USATT# 77371)'s rating went from 1654 to 1649 at the AZ PTTC Monday event from 21 Nov 2011. 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.