Little Big League (1994)

"The Minnesota Twins Have A New Owner"
TMDb Score

When the owner of the Minnesota Twins passes away, he bequeaths the team to his preteen grandson. The newly minted head honcho quickly appoints himself manager, causing unrest in an organisation that struggles to take orders from a 12-year-old.

Andrew Scheinman
Luke Edwardsas Billy Heywood
Timothy Busfieldas Lou Collins
John Ashtonas Mac MacNally