Maldonado Sports Management MSM is a full-service sports representation agency. We are focused on empowering pro athletes while providing client management services. MSM specializes in NBA, G-League, and top international leagues around the world. We build personal relationships with our clients while maximizing their value both on and off the court. Globally, MSM has successfully negotiated millions in players' salaries. Our staff has two decades of expertise in contract negotiations, endorsements, brand building, and marketing.