Client Relations Manager
Chief Financial Officer
Keith Mantel is co-founder of Fifty One Sports, LLC. Keith leverages his business acumen, entrepreneurial spirit, and real estate experience to identify and negotiate sponsorship opportunities and is committed to protecting the financial interests of our clients. Keith draws from his experiences traveling abroad, fluency in multiple foreign languages, and distinguished military service in the Army to provide the firm with a multi-cultural approach to exploring opportunities that may extend outside the continental United States.
Keith received a Master of Business Administration (MBA) in Economics and Finance from Texas A&M, a Master of Science in Land Management from the Technical University of Munich (Germany), and a Bachelor of Arts in International Affairs from the University of Maryland. Keith is a licensed real estate agent in Washington DC, Virginia, and Florida.
Sports Agent & CEO
Fifty One Sports, LLC
2831 St Rose Pkwy, Suite 297
Henderson, NV 89052
Simon Mantel is co-founder of Fifty One Sports, LLC. Simon is a retired federal special agent and Army veteran who epitomizes honesty, integrity, and trustworthiness in representing our clients, seeking potential endorsement opportunities, and inspiring collaboration among all of the stakeholders responsible for the success of professional athletes.
Simon graduated from Seton Hall University School of Law with a Master of Science in Jurisprudence, participated in the Senior Executive Fellows program at the John F. Kennedy School of Government at Harvard University, participated in the Sports and Entertainment Law Society at Seton Hall Law, completed Sports Agent School hosted by TPG Sports Group, and received a Bachelor in Police Science from George Washington University with Distinguished Scholar honors.
Juan Plakio works tirelessly to ensure Fifty One Sports clients maximize the firm’s full range of services. Juan is a common fixture at some the “Fight Capital's” most influential training facilities and continues to develop strong relationships with top promotional organizations. Juan has a keen eye for identifying potential sponsorship opportunities and takes a hands-on approach to ensuring client compliance with ethical, regulatory and contractual obligations.
Juan, an Albuquerque New Mexico native, is a Coast Guard veteran, completed a Bachelor of Science in Business from the University of Phoenix, and is a licensed Manager registered with the Nevada State Athletic Commission.
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