8 Feb 2020 - 8 Feb 2020
This page explains how Andrei Ilnitskii (USATT# 216594)'s rating went from 1566 to 1562 at the 2020 SPTTC FEBRUARY OPEN held on 8 Feb 2020 - 8 Feb 2020. The links below take you to pages that describe various aspects of the ratings processor.
The ratings 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.