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Yes, that was really Jake Gyllenhaal pretending to fight Jay Hieron at Saturday’s UFC 285, which doubled as a movie set for the actor’s next project.

With great patience and puzzle-solving, the Met reconstructed the cup and decided it had been created by two notables of ancient ceramics: Hieron, the potter, and Makron, the painter.

Occupying a central spot in one of the galleries is a second cup by Makron and Hieron that von Bothmer also put together from fragments.

Former UFC fighter Jay Hieron and double champion Conor McGregor — who are also set to appear in the new “Road House” — participated in the event as well.

While filming a weigh-in scene, Gyllenhaal flexed his muscles for the audience and got into a scripted, physical altercation with Hieron, who plays his rival in the action flick.