This page explains how Artur Kurek (USATT# 76969)'s rating went from 2259 to 2231 at the Experior Club League event from 6 Oct 2017. 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.