This page explains how Jason Piech (USATT# 201854)'s rating went from 609 to 606 at the MDTTC Tuesday/Friday League event from 24 Jun 2016. 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.