This page explains how Janusz Franeczek (USATT# 26185)'s rating went from 2157 to 2158 at the Experior Club League event from 16 Feb 2018. 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.