Mark Cuban, the longtime owner of the Dallas Mavericks and shark on "Shark Tank," and Atlanta Falcons minority owner Rashaun Williams are buying into the Athletics, reports Ben Horney of Front Office Sports. ...Read More on MLBCuban and Williams are buying in through the sports-focused private equity firm Harbinger Sports Partners. It's also located on the famous Las Vegas Strip, providing easy access for visitors and tourists. "We are very pleased to welcome Harbinger Sports Partners as an investor in the Athletics," the team said in a statement reported by ESPN. Williams told FOS said Harbinger and the group weren't looking to buy into just any MLB team.