Back in 1976, no one knew who Sly Stallone was. Luckily, the United Artists marketing department knew how to build a box office contender.
Brief / Source report
I Remember ‘Rocky’: My Front Row Seat to the Marketing of a Million-to-One Blockbuster

Brief / Source report

Back in 1976, no one knew who Sly Stallone was. Luckily, the United Artists marketing department knew how to build a box office contender.