This page explains how Tim Irwin (USATT# 1132472)'s rating went from 1570 to 1593 at the SpinBlock February Open 2021 held on 27 Feb 2021 - 27 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.