Brian Mackler is an NFLPA-certified sports agent and senior partner at SPORTSTARS, INC., a New York-based football representation agency known for its long-standing presence in NFL contract negotiations and player management. He operates within the firm’s NFL division, where he is involved in representing professional football players, advising clients through contract negotiations, and supporting roster and free agency decisions across the league. Mackler has been certified as a contract advisor since 1992 and has built a career spanning more than three decades in the NFL representation industry. Within SPORTSTARS, INC., he has played a key role in negotiating NFL contracts for clients across multiple generations of players, contributing to the agency’s reputation as one of the more established football agencies in the Northeastern United States. SPORTSTARS, INC. operates as a full-service athlete management firm representing NFL players in contract negotiation, player placement, and career advisory services. The agency is led by a group of senior agents including Alan Herman, Dave Butz, and Brian Mackler, and has been recognized for its sustained presence and volume of client representation in professional football over several decades.