In this day and age, MMA promotions are getting tens of millions of dollars and now the Professional Fighters League (PFL) is the latest to receive such a figure in funding.

PFL recently announced that it has received $28 million in additional funding thanks to a number of celebrity backers providing the funding. The Series B investment includes investments from the likes of comedian Kevin Hart, television producer Mark Burnett, famed motivational speaker Tony Robbins, and Washington Capitals owner Ted Leonsis.

The PFL is currently in the middle of it’s first full season. The promotion, formerly known as the World Series of Fighting, made its debut this past June. The PFL uses a standings system similar to major pro team sports leagues, in which winners get points for victories, but the points awarded to the fighters are weighted towards fighters who win via finish.

The regular season will lead to a single-elimination playoff format, with promised $1 million prizes to the winner of each of the six weight classes competing (featherweight, lightweight, welterweight, middleweight, light heavyweight and heavyweight.

The promotion’s next two events, scheduled to take place in Atlantic City, New Jersey, will take place on August 16 and 30. The PFL playoffs are scheduled to happen in October on venues to be announced later with the championship taking place on December 31.