Baseball foul balls are more dangerous than people think
Everytime I see one go into the stands I wince.
That's why they are called "foul balls"
I go to watch the Mariners at Safeco Field two or three times a season. While waiting for the game, there is always an announcment about "feeling you are too close to the action", and that they will find you a different seat if you wish.
I know my eldest daughter actually doesn't want to sit down by the field as she doesn't like all the "balls and bats" flying into the stands.