It’s a story and video of a kid named David Denson. He was participating in some event and hit a confirmed 515 foot homerun.
He hasn’t played for any version of Team USA so has no cards. If he does show up on cardboard anytime soon get ready for a feeding frenzy. This is the kind of stuff early prospectors drool over!
As the story mentioned a 502 footer in the same fashion is what helped launch a little guy named Bryce Harper into the stratosphere.