The New York Rangers stand as the undisputed fiercest and most historic rival of the New Jersey Devils, sharing a deeply intense geographic and cultural animosity known as the Hudson River Rivalry. Pitting the tri-state area fanbases against each other, this matchup has produced some of the most physical, emotionally charged, and unforgettable playoff series in National Hockey League history, highlighted by legendary postseason showdowns that capture the ultimate intensity of sports competition.