This page explains how Roberto R. Saria (USATT# 62622)'s rating went from 1622 to 1620 at the AZ PTTC Monday event from 15 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.