This page explains how Robert Spitzer (USATT# 27003)'s rating went from 1878 to 1871 at the NJTTC Thursday Adv League event from 26 Apr 2018. 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.