This page explains how Janusz Franeczek (USATT# 26185)'s rating went from 2100 to 2109 at the End of Summer Open held on - 27 Sep 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.