This page explains how Felix Dubinsky (USATT# 28275)'s rating went from 1877 to 1797 at the NJTTC Monday League event from 31 Dec 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.