Who's at fault when foul hits fan?

In this Tuesday, May 20, 2014 photo, fans react as a young boy is picked up by his father and rushed up the steps after being hit by a foul ball off the bat of Milwaukee Brewers' Carlos Gomez in the seventh inning of a baseball game against the Atlanta Braves in Atlanta. The 8-year-old boy who was struck in the head has been released from the hospital and is "doing well." While the family requested privacy and boy's name was not released, the Braves said Thursday they had received a call from the victim. He thanked the players who visited him in the hospital and let the team "know that he's home and doing well." (AP Photo/Todd Kirkland)