This page explains how Patrick Keville (USATT# 77971)'s rating went from 1800 to 1785 at the NJTTC Monday League event from 4 Dec 2023. 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.