Jim Tanner, whose client list includes Tim Duncan, Ray Allen and Grant Hill, announced Thursday that he was now representing Lin, the ’ 23-year-old point guard.
Tanner’s law firm, Williams Connolly, based in Washington, will handle marketing, endorsements, licensing, personal appearances and other business opportunities for Lin, according to a news release.
Roger Montgomery, an agent based in San Antonio who has worked with Lin since he first entered the N.B.A., will handle Lin’s coming free agency “and other basketball-related matters.”
“I believe Jim and the team at Williams Connolly are the best fit for me in all aspects of my career,” Lin said in a statement, adding, “I am confident that Williams Connolly will provide me with the guidance I need to continue to develop personally and professionally.”
Lin, who became a breakout star this season, is poised to cash in on his newfound fame. He will be a restricted free agent as of July 1 and is expected to command more than $5 million a year in his next contract. The Knicks have the right to match any offer Lin receives, and team officials have said they intend to do so.
The free-agent negotiating period opens at midnight July 1, although deals cannot be consummated until July 11.
Lin’s family has been unhappy with his marketing and has been seeking a larger firm to handle it. Montgomery runs a relatively small agency, with only a handful of N.B.A. clients.
Montgomery did not return calls seeking comment.
Lin, who was little known when the season started, became an overnight global sensation in February, when he seized the Knicks’ point guard job and promptly led them on a seven-game winning streak filled with 20-point games and clutch shots. In his 26 games as an everyday player, Lin averaged 18.5 points and 7.7 assists.
Lin was undrafted out of Harvard in 2010 and was cut by two teams in December before the Knicks claimed him. The son of Taiwanese immigrants, he is the only current Asian-American player in the N.B.A.
Tanner joined Williams Connolly in 1997 and worked under Lon Babby, a partner at the firm who was building a practice representing professional basketball players. In 2010, Babby left the firm to become president of the Phoenix Suns.
The firm, which was started in 1967, is mainly known for its litigation prowess and its insider credentials in Washington. It represented Oliver North in the Iran-contra scandal and President Bill Clinton during his impeachment trial.
But the firm has also carved out a niche representing talent across the entertainment industry, and it is now representing Ann Curry as she negotiates her possible exit as a co-host of NBC’s “Today” show.
It is an unusual line of work for a corporate law firm, but Williams Connolly has always had an iconoclastic streak. While other elite Washington firms grew into global mega-firms, Williams Connolly, with 250 lawyers, has remained relatively small.
The firm has longstanding connections to the world of sports. Larry Lucchino, a former partner, is the Boston Red Sox’ chief executive. And Edward Bennett Williams, the firm’s founder, was the Baltimore Orioles’ owner and served as president of the Washington Redskins for 20 years.