Rizzo took off for second with Baez on 2nd and Baez didn't go to 3rd. Brewers dropped the ball before being able to execute any kind of rundown and Baez got to 3rd and Rizzo back to 1st without plays at either base. The funny thing is that Rizzo stole second and then unstole it. Which, in pure "baseball" fashion, has of course now happened twice in Cubs/Brewers games.