The spotlight just wasnt big enough for the two of them! These actors became rivals either through public feuds, or just by one-upping each other in their respective movie roles. Our list of actor rivalries includes Vin Diesel, Dwayne The Rock Johnson, Sophia Loren, Jayne Mansfield, Frank Sinatra, Marlon Brando and more! Who do YOU think would win in a fight between the actors in our number one pick? Let us know in the comments! Watch more great videos here: Top 10 Celebrity Feuds: