The incredible shrinking Johah Hill mugged for cameras at the Toronto International Film Festival with this Moneyball co-star -- and good buddy -- Brad Pitt.

Moneyball gives the comedic actor a chance to show off his dramatic chops in a Steven Soderbergh adaptation of the book Moneyball: The Art of Winning an Unfair Game. Hill plays a recent Yale grad who helps Brad Pitt's character -- a baseball coach -- build a winning team made up of players who don't command astronomical salaries.

The unlikely duo worked well together on and off screen.

The movie is really the two of us playing off of each other a majority of the time, so if that chemistry wasn't there between us, I think the movie would have completely failed, Hill told MTV. So I think we both knew that going in, and I think we both happened to like each other a lot. We definitely played some pranks on each other. That part of [Brad Pitt] lore is true, that he likes to do that.

Hill's dramatic weight loss took place after Moneyball was finished filming. Take a look at the Superbad transformation...

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Comedy star Jonah Hill watches the Los Angeles Lakers play the Utah Jazz during Game 2 of their NBA Western Conference semi-final basketball series in Los Angeles, California May 7, 2008 Reuters
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Cast member Jonah Hill attends the premiere of "Cyrus" during the 2010 Sundance Film Festival in Park City, Utah January 23, 2010 Reuters
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Actor Jonah Hill and a guest arrive at the 16th Annual Critics' Choice Movie Awards in Hollywood, California January 14, 2011 Reuters
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Actor Jonah Hill arrives at the Fox All-Star Party in Pacific Palisades, California August 5, 2011 Reuters
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Actors Brad Pitt (R) and Jonah Hill of the film "Moneyball" pose during the 36th Toronto International Film Festival (TIFF) September 9, 2011 Reuters
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