Dolph Lundgren sent Sylvester Stallone to the hospital on the set of Rocky IV

On the set of Rocky IV, Dolph Lundgren punched Sylvester Stallone so hard that Stallone was required to go to the hospital for a few weeks. Stallone, who played Rocky Balboa, fought Dolph Lundgren’s character, Ivan Drago, in the movie after Drago kills Rocky’s coach and friend, Apollo Creed. Dolph, standing at 6 feet 5 inches of bulk and chiseled muscle, proved to have a bit too much power for poor Stallone. Filming was eventually able to pick back up.