This page explains how Mark J. Hoffman (USATT# 24438)'s rating went from 1472 to 1470 at the Chicago Table Tennis League Week 7 held on 19 Feb 2017 - 25 Feb 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.