This page explains how Patrick Keville (USATT# 77971)'s rating went from 1956 to 1896 at the NJTTC Thursday Adv League event from 18 Apr 2019. 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.