lack Diamond PR & Sport Management Firm is a full-scale PR & Athlete Management Firm. Our Award-Winning Public Relations & Sport Management Firm based in Dallas, Texas. We specialize in Sport Marketing and Entertainment PR, representing some of the most prominent Athletes, Artists, Authors, Public Speakers, Small & Corporate Businesses in the industry. We create full-scale public relations and marketing campaigns to promote brand loyalty, captivate audiences, and build buzz. Black Diamond PR Firm is recognized as a top Public Relations Company on DesignRush and a member of the Public Relations Society of America. We were recently named one of the Top 13 PR Firms in the US.