ESPN tells the story of the ball Jorge Soler hit out of Minute Maid Park. People watching the game from a balcony across the street saw where it landed and made a rescue:

So within minutes, Richard’s wife, Shawnda, and Manuel took to the street. Manuel guessed it took them about eight minutes to get down there — and then they discovered that the fenced-off area was inaccessible from where they were.

“I was talking to security, like, ‘Please, just escort me over there,” Shawnda said.

That conversation turned out to be the moment Manuel needed. As the security guards spoke with her, he jumped at his opportunity. Literally. “I guess I distracted them,” Shawnda said. “I didn’t even do it on purpose. I didn’t even know he came down [with me].”

ESPN.com

Their first thought was to burn the ball if the Braves won, but now that it’s the ball that won the World Series, they’ll hold on to the prize to see how much it’s worth.