Former Editor Takes In Cubs Game, Foam Claw Index Ensues Jon Greenberg Apr 2019 (Vol 31 Issue 2)FanCostIndexMost PopularTMR Insider 04.30.2019 Want to read more? Create your account HERE. Basic access is FREE, and we have several membership levels depending on your needs. Jon Greenberg Currently Founding Editor/Columnist at The Athletic Chicago. Jon was with TMR from 2003-15, including Executive Editor 2008-15.