Michael Delle Donne is an NFLPA-certified Contract Advisor and the Founder & CEO of STACK Football, a football-focused athlete representation agency that provides NFL contract negotiation, athlete development, and career management services. According to the NFLPA agent directory, Delle Donne has been NFLPA-certified since 2021 and is affiliated with STACK Football in Rehoboth Beach, Delaware. He is authorized to represent NFL players in contract negotiations and related player representation matters. Background Before founding STACK Football, Delle Donne built a career in sports business, athlete marketing, and football operations. He is also known as the brother of WNBA superstar Elena Delle Donne, though his professional work is focused on football representation and athlete management.