Prossin Sports Management in Grantville is an international San Diego athlete-representation and marketing agency headquartered at 6136 Mission Gorge Rd, Suite 102, in the 92120 ZIP. Attorney Adam L. Prossin, Esq., who earned his Juris Doctor from Thomas Jefferson School of Law in San Diego and a Master of Laws in Taxation from Golden Gate University, founded the firm as a FIBA-approved basketball agent practice and sports-marketing consultancy. Contract negotiation, endorsement procurement, and career-transition planning run through the legal-services arm, which parallels the entertainment and business-law practices at Grantville firms including Law Offices of Payman Zargari. The client roster spans athletes competing in more than eighty countries across Europe, Asia, the Middle East, Africa, South America, and Oceania, with particular depth in basketball placement from minor-league developmental programs through top-tier international leagues. Mission Gorge Road's position between SDSU and the Mission Trails Regional Park corridor gives the agency proximity to the university's athletic programs and the training facilities that dot east-county commercial zones. Director of Athlete Training Larry Daniels brings thirteen seasons of overseas basketball experience across fifteen countries, running combines, training camps, and talent-evaluation clinics for prospects under consideration by the agency. Multi-jurisdiction athlete income requires coordinated tax planning and liability coverage, and Grantville insurance brokers including Farmers Insurance - Leonard Agosta serve the commercial-policy needs of small firms operating across international markets. The agency's dual structure as a law firm and management company allows Prossin to handle player contracts, immigration filings for international transfers, and endorsement deal structuring under one roof.