Professor Martin J. Greenberg – 50 Years of Sports Law: A Retrospective Posted on: March 11, 2023 by: Martin J. Greenberg Professor Martin J. Greenberg (L ’71), Managing Member, Law Office of Martin J. Greenberg, LLC, and Adjunct Professor of Law, Founder, National Sports Law Institute, NSLI Board of Advisors, Milwaukee, WI. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)