Sylvester Stallone says Michael B. Jordan got knocked out for real in 'Creed'

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Perhaps the most important quality of a really good fight scene is realism. There has to be a sense that the two people fighting are actually in danger of being hurt -- otherwise, it comes off as just well-executed choreography. While filming "Creed", the latest installment in the "Rocky" franchise, actor Michael B. Jordan got a taste of what a real-life knockout punch feels like -- at least, according to co-star Sylvester Stallone:

Jordan seems just fine now, but that looked like it hurt.