This is what we found on Wikipedia regarding the Professional Fighters League MMA:

The Professional Fighters League (PFL) is an American mixed martial arts league founded by venture capitalist Donn Davis in 2017 and launched in 2018, following the acquisition and restructuring of the former World Series of Fighting (WSOF) promotion in 2017 by MMAX Investment Partners. It is the first major MMA organization in which individual athletes compete in a regular season, post-season and championship, rather than on a year-round basis.

The PFL currently puts on fights across six weight-divisions: featherweight, women's lightweight, lightweight, welterweight, light heavyweight and heavyweight. In addition to this, there is also a ‘Super Fight’ division, which isn't defined by weight, but instead is based on the status and name value of individuals who compete in it. The PFL's matches are held inside a 10-sided mixed martial arts cage known as the SmartCage, and adhere to the unified rules of mixed martial arts, with the exception that the PFL prohibits all elbow strikes.

The PFL's inaugural event took place on June 7, 2018, at the Hulu Theater at Madison Square Garden in New York City, New York. At the end, each champion of the six weight classes won a championship prize of $1 million each.