On this week's Modern Retail Rundown, we discuss Walmart's lackluster performance in urban centers, following the retail giant's major Chicago exit. Next, a preview from Amazon CEO Andy Jassy shows that the Whole Foods ownership hasn't panned out well when it comes to Amazon's big grocery ambitions. Lastly, we discuss the latest updates from connected fitness startup Tonal, including a C-suite reshuffle and founder Aly Orady's departure.