Mark Cuban has already said he regrets who he sold the Dallas Mavericks to, but he's taking it one step further.

Mark Cuban is fighting for answers after accusing Mavericks owners of shutting him out of the team's massive new North Dallas arena project.

Cuban says the Mavs' planned North Dallas arena development shut him out of an investment opportunity, deepening his rift with Patrick Dumont and the Adelson ownership group.

Mark Cuban has taken his increasingly public dispute with Dallas Mavericks majority owner Patrick Dumont to court, accusing his business partner of shutting him out of the team's plans for a new arena ...