By TMZ Sports
How serious did movie star Michael B. Jordan take his role for the movie "Creed?" So serious that his boxing co-star Gabriel Rosado says Joradn could deal out some two-fisted punishment for real.
Rosado -- a junior middleweight and middleweight contender -- was out in Los Angeles when he told us Michael was like a sponge during the production ... soaking up enough boxing knowledge to make him a real life ass kicker.
"Michael can throw down man. If you sleep on him in the street he might put you to sleep."
Gabriel would know a real fighter when he sees one ... he's been in the squared circle with David Lemieux, Gennady Golovkin and Peter Quillen among many others.
Creed is a spinoff of the Rocky movie series. The Creed storyline has Rocky Balboa, played by Sylvester Stallone, training the son of Apollo Creed - who died in the fourth Rocky film.