Those wanting to force a prayer on people in a captive situation like a crowd at a ballgame are no better than the radical islamist who force their religion on the unwilling.
The bible is clear in the new testament in calling public prayer something done by hypocrites for their own pride and display to others. Go in a private place and pray.
I personally don't like someone praying at a ballgame or any other public event to the crowd that is not for a religious person. Not everyone goes there to be a part of your theatrical display of your religious zeal.
This prayer in school and at public events didn't start until right wing politicians started using the prayer issue to fire up their base. When I was in school in the 70s there was no public prayer in schools or at ballgames, and it was fine. Anybody that tries to shout a prayer to bother someone else should be punched in the face and hauled off to jail.