Today, the list of wealthiest sports team owners includes two separate heirs to the Walmart fortune, Rob Walton and Ann Walton Kroenke, along with Bill Gates' former assistant Steve Ballmer.
Kroenke Sports & Entertainment owns teams in other sports leagues ... Kroenke, who is married to Walmart heiress Ann Walton, made a fortune in the real estate world as well.
The Celtics have been sold for $6.1 billion. It's a a North American sports franchise record. Here are others that sold for ...