This page explains how Robert Spitzer (USATT# 27003)'s rating went from 1809 to 1786 at the NJTTC Thursday Adv League event from 20 Jul 2017. 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.