This page explains how Artur Kurek (USATT# 76969)'s rating went from 2309 to 2300 at the Champaign Open Winter Giant Round Robin held on - 15 Feb 2014. 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.