Some of the biggest celebs out there really give 110% to their projects ... can you guess who this hard-working actor is?

We caught up with this guy while he was signing autographs for a bunch of his adoring fans in New York City, and he dished about linking up with Patrick Mahomes ' coach while preparing to star in a show about a football player ... any guess which "Powers"-ful character it is?

If we could offer him any advice about looking like a legit NFL star -- we'd just tell him to keep running, man!

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