This page explains how Vasily Avram (USATT# 69750)'s rating went from 1978 to 1976 at the Boston TTC event from 3 Mar 2020. 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.