This page explains how Alexander Vengerovsky (USATT# 270415)'s rating went from 1237 to 1227 at the NJTTC Tuesday V League event from 27 Jul 2021. 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.