This page explains how Alex Kotlyar (USATT# 21222)'s rating went from 1487 to 1568 at the SpinBlock Monday Night League event from 1 Feb 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.