This page explains how Alex Kotlyar (USATT# 21222)'s rating went from 1574 to 1581 at the 2018 Indiana State Championship held on 28 Apr 2018 - 29 Apr 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.