Chicago Cubs pitcher Cody Poteet believed the 95 mph fastball he threw to Los Angeles Dodgers slugger Max Muncy was in the strike zone. Home plate umpire Tony Randazzo disagreed and called it a ball. Instead of arguing, Poteet simply patted the top of his cap, signifying he wanted to challenge the call. After a few seconds, the verdict was ready on the video board in right-center field. Poteet was correct — it was a strike, just catching the bottom of the zone. The first test of the Automated Ball-Strike System went off without a hitch Thursday, with Randazzo quickly reversing the call.