Taylor Green launched his first big league homer during the eighth inning of Wednesday's game at Miller Park, and 26-year-old Brewers fan Chris Kopp of Wauwatosa, Wisc., snagged the ball in the right-field stands.
Kopp later returned the souvenir and received one of Green's bats for his trouble.
"He's a great guy," Green said. "I really appreciate him giving it back to me. I gave him a bat, but he didn't even ask for it. He's a good guy."