Doctors say it may take five days for the swelling in Luke Holko's brain to subside. It's unclear how well he'll recover.
Holko and his family had front-row seats near first base for Wednesday's doubleheader at the home of the Mahoning Valley Scrappers, a short-season Class A affiliate of the Cleveland Indians.
Holko was hit as he sat in his father's lap and talked to his mother. Paramedics took him to a local hospital.
During a news conference Friday, the boy's mother, Nicole Holko of North Bloomfield, said her son loves baseball and the accident won't stop the family from attending games.
This story was not subject to the approval of the National Association of Professional Baseball Leagues or its clubs.