 Heavyweight boxer Earnie Shavers (qv) was considered for the role  of Clubber Lang. This was because Sylvester Stallone (qv) thought  that he was good enough to fight a real boxer, instead of an actor.  But in a practice fight Shavers, taking it easy on Stallone, broke  two of Stallones ribs in less than three rounds, so he was  immediately dropped from consideration for the role.