In the third, Anthony Rizzo upstaged Heyward with his first hit and homer -- 452 feet to straightaway center, 112 mph off the bat.
The Cubs led, 2-0, after Rizzo's blast, but eventually lost the game, 4-2.
Thomas Harding is a reporter for MLB.com. Follow him on Twitter @harding_at_mlb, listen to podcasts and like his Facebook page. This story was not subject to the approval of Major League Baseball or its clubs.