It seemed unlikely that a "Rocky" sequel could feel fresh and exciting in this day and age. And then Ryan Coogler came along with "Creed" in 2015 and proved it wasn't just possible, it was vital. His film smartly centered on Adonis Creed (Michael B. Jordan), the son of late Rocky opponent Apollo Creed, rather than the Italian Stallion himself. It became an instant classic in the boxing movie canon, scoring a Golden Globe for Sylvester Stallone as an emotionally vulnerable and battle-weary Rocky Balboa. With the critical and commercial success of "Creed," it's logical and in fact, necessary for a sequel, especially with the unfinished business Adonis has with yet another boxing dynasty.