The deal strengthens what is already a tight relationship between the two sides. Sportradar has worked with the league in varying capacities since 2016. The firm’s backers include a trio of NBA owners—Mark Cuban, Michael Jordan and Ted Leonsis’ Revolution Growth—all of whom invested back in 2015, when Sportradar was a private company. Jordan, who owns the Charlotte Hornets, is also a special adviser to the company’s board.