This page explains how Dmitri V Fomin (USATT# 2818)'s rating went from 2083 to 2039 at the Boston TTC event from 4 Sep 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.