This page explains how Andrei Ilnitskii (USATT# 216594)'s rating went from 1670 to 1677 at the Spttc Wednesday night league event from 9 Oct 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.