It's known how to prevent fan injuries from foul balls at MLB games, so why don't we?
Albert Almora in tears after striking child with foul ball in Cubs-Astros game, Chicago Cubs
Girl hit by foul ball at Astros game suffered skull fracture - Sports Illustrated
Cubs batsman Albert Almora Jr. is reduced to tears after his foul ball strikes a small toddler
Girl hit by foul ball at Astros game still suffering, 7 months later
Extremely upsetting' that girl was struck by foul ball at Astros game, MLB says - ABC News
Foul ball hits young girl
Albert Almora Jr in Tears after striking Little Girl with 100 MPH Foul Ball
Baseball player Albert Almora in tears after '90mph ball' hits four-year-old girl, US News