This page explains how Jeff Ruiz (USATT# 93102)'s rating went from 1680 to 1666 at the AZ PTTC Monday event from 17 Mar 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.