UFC rich list: from Conor McGregor to Khabib Nurmagomedov, the 5 richest fighters ever net worth
B.J. Penn US$22 million He has a net worth of US$22 million and, according to Ultimate Fighting Network, most of his wealth is from fight pay during his eight-year UFC run. He also had endorsement deals with Reebok and Last Shot, and runs his own gym and an MMA media distribution website.