This page explains how Mark J. Hoffman (USATT# 24438)'s rating went from 1419 to 1470 at the Chicago Land Area Singles League event from 9 Feb 2013. 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.