The Relentless and Invincible Rocky Marciano

Watch the historical documentary "Rocky Marciano: The Undefeated King of Boxing" to know why he's considered the greatest boxer of all time. This documentary tells the incredible story of the Brockton blockbuster Rocky Marciano, from his humble beginnings as a street fighter to becoming the most dominant fighter in the world. Aggressive fighting style and an impressive track record inspired the famous American actor and director Sylvester Stallone to create the image of Rocky Balboa, which in turn gave the world, in my opinion, a great sports drama.