This page explains how Felix Dubinsky (USATT# 28275)'s rating went from 1884 to 1880 at the NJTTC Thursday Adv League event from 9 May 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.