'You Don't Need to Knock Out Your Competition to Win': Inside the Professional Fighters League's Strategy for Success Donn Davis, founder of the mixed martial arts Professional Fighters League, explains his master plan for gaining athlete and fan buy-in. Previous Article Individual Investors Are Increasing Private Equity Allocations. Is it the Right Move For You? Next Article 'Everything Has Changed': How Rhone's Founders Bought Out Their Major Investor and Reclaimed Control