Brad Pitt and a slimmed-down Jonah Hill are promoting their baseball film, Moneyball, in Mexico. The film is based on the true story of how Oakland A's general manager Billy Beane used statistics to turn his struggling team around. Brad Pitt plays Billy Beane and Jonah Hill plays the smart young statistician, Peter Brand. You can watch a trailer here. The film arrives in theaters in the U.S. on September 23. Take a look: