If you watch the beggining of the movie, when Coop

is a little kid and he is at the World Series game where Reggie Jackson hits 3 homeruns. Well anyway, they show him catching Reggie's 3rd homerun of the game. They show the ball sailing into the crowd, but the 3rd homerun that Jackson hit that day actually went onto the grassy nole in center field, not into the stands.