Many professional leagues are now getting involved in legal sports betting.

Last November, Fan Duel signed a four-year exclusive deal with the NBA to be their daily fantasy partner.

Draft Kings has deals with several NBA teams directly and they have a similar deal with the NHL.

During a panel at the Sports Lawyers Annual Conference on Friday, Liz Mullen of Sports Business Journal reports that a panelist said that these types of deals could raise the salary cap for players by tens of millions of dollars.