Anthony Oncidi

Proskauer - California


2029 Century Park E, Suite 2400
Los Angeles, CA 90067

+1 310 284 5690

California - Litigation Star

Labor and employment Star

Litigation Star

Top 50 Labor & Employment Litigator

Practice area:

Labor and employment

Adam is a trusted litigator and counselor in all areas of labor and employment law, with a particular expertise representing professional sports leagues and teams. 

Clients count on Adam to handle their most complex, sensitive and high profile matters. Whether it is a dispute involving a superstar athlete, bargaining with powerful labor unions, defending class and collective actions, or litigating discrimination and harassment claims, Adam knows how to deliver results for his clients efficiently and effectively. 

Recently, Adam has defended Major League Baseball and its member Clubs in class and collective actions, and the National Hockey League in concussion-related and wrongful death claims brought on behalf of former players. Outside of the courtroom, Adam has advised numerous sports leagues in connection with collective bargaining negotiations with players and in-game officials. 

Adam also heads up the Firm’s Major League Baseball Salary Arbitration practice, representing a number of Clubs during contract negotiations and at arbitration hearings. Adam’s practice extends far beyond the world of sports, as he has extensive experience representing financial services, healthcare, media and entertainment, telecommunications, energy, retail and hospitality clients in a wide variety of labor and employment law matters in state and federal court, and before administrative agencies. 

Adam has lectured on sports and the law at Cornell University, and frequently represents the Firm and the Sports Law Group on panel discussions and at career seminars for current and prospective lawyers. 

Representative Matters: 

  • Major League Baseball in the labor dispute with the Major League Baseball Players Association and the negotiation of a new collective bargaining agreement. 
  • Angel Hernandez v. Major League Baseball (S.D.N.Y.) in successfully defending against race and national origin discrimination claims brought by a current Major League umpire. 
  • Alex Rodriguez v. Major League Baseball et al. in playing a leading role on the trial team that defended the grievance arbitration and related litigation challenging the suspension of then-New York Yankees third baseman Alex Rodriguez. 
  • Senne et al. v. Office of the Commissioner of Baseball et al. (N.D.Cal.) in a putative class and collective action lawsuit brought on behalf of current and former minor league players who allege minimum wage and overtime violations. 
  • Wyckoff et al. v. Office of the Commissioner of Baseball et al. (S.D.N.Y.) in obtaining a complete dismissal of the class and collective action complaint brought on behalf of baseball scouts. 
  • Boogaard et al. v. National Hockey League (N.D.Il.) in the complete dismissal of wrongful death claims brought by the estate of Derek Boogaard, a former player for the New York Rangers and Minnesota Wild. 
  • In re National Hockey League Players’ Concussion Injury Litigation (D. Minn.), a multidistrict litigation brought by retired NHL players who allege to suffer from the effects of concussions. 
  • Salary arbitration proceedings against players such as Josh Donaldson, Marcus Stroman, Dansby Swanson, Austin Riley and Joc Pederson. 

Updated Sep 2023