Technically, there is nothing anyone can do anything about it.
A ballpark is fair game, pardon the pun.
Since he was flying LOS, he'd have to keep it visible at all times.
At 70 meters, I can't see my bird.
So if I can't see it, how would the people in the park see it?
If it's such a big issue over safety, then why are blimps allowed to fly overhead during a game?
BTW, did y'all note the statement the FAA had?
Commercial usage requires a COA and a license.
HORSEHOCkEY!
Just more bullying tactics to try and keep cameras out of the sky.