Honigman has been very active in antitrust matters in the sports and entertainment industries. Representative cases include the following:
- Easton v. NCAA. Claim of antitrust violations by National Collegiate Athletic Association (NCAA) through restrictions on use of bats in NCAA competition.
- In re Motorsports Merchandise Antitrust Litigation. Defense of a class action alleging price fixing in the sale of merchandise at NASCAR races.
- Indianapolis Motor Speedway v. Championship Auto Racing Teams, Inc. Defense of antitrust claims arising out of dispute between rival auto racing leagues.
- Full Draw Productions v. Easton Sports, Inc. Defense of claim of group boycott in connection with archery trade show.
- Onekama v. Grand Traverse Marine. Defense of claim of boycott in connection with boat show.
- Mike's Train House v. Lionel Trains. Defense of monopolization claim with respect of the sale of model trains.
- Kerasotes v. National Amusements. Honigman brought antitrust claims on behalf of a regional theater chain, alleging that the National Amusements theater chain conspired with major national film distributors to obtain exclusive first-run showings of films.
- Baum v. Hillerich & Bradsby Co. Defense of antitrust claims related to sale of baseball bats.
- Lundsford v. Callaway Golf Co. Defense of purported class action alleging resale price maintenance in the sale of golf clubs.
- L.G. Motorsports, Inc. v. NGMCO, Inc. Allegation of unlawful refusal to deal with auto racing team.
- McCourt v. California Sports. Defense of challenge to hockey free agency rules.
Hobart-Mayfield, Inc. d/b/a Mayfield Athletics v. National Operating Committee on Standards for Athletic Equipment, et al (E.D. Mich.). Defense of claim of conspiracy by football helmet manufacturers.
In re Local TV Advertising Antitrust Litigation (N.D. Ill.). Defense of class action alleging collusion with respect to television advertising rates.