The PFL 4 mixed martial arts event for the 2019 season of the Professional Fighters League was held on July 11, 2019, at the Ocean Resort Casino in Atlantic City, New Jersey. This was the fourth regular season event of 2019 and include fights in the welterweight and women's lightweight divisions.

The PFL 11 mixed martial arts event for the 2018 season of the Professional Fighters League was held on December 31, 2018, at the Hulu Theatre at Madison Square garden in New York City, New York, Illinois.