Since there was no money to shoot in all the stadiums the Oakland Athletics visited, Dodger Stadium was dressed up as eight different ballparks.
David Justice is played by Stephen Bishop, a former pro baseball player. Bishop was a career Minor Leaguer, and as a Braves prospect was nicknamed Young Justice due to his physical resemblance and similar playing style to David Justice.
During a meeting with scouts discussing players, one scout dismisses a player for having "an ugly girlfriend", translating this as that the player has "no confidence." The story that an Athletics scout didn't want a player because he didn't have an attractive girlfriend is apparently true, but in real life, he cited this as meaning "bad eyesight."
When Chris Pratt auditioned for the role of Scott Hatteberg, he was told he was too fat. Pratt decided to lose weight before the role was cast. "I'd check, maybe, once a week," he recalls. "I'd say, 'They cast it yet?' And I would just keep working out. Finally I got in good enough shape that I took a picture of myself and sent it to my agent." He won the role.
Billy Beane is portrayed as a lonely divorcé. In real life, he had remarried. Scenes were shot with Kathryn Morris as his second wife, Tara. They didn't make the final cut, though they're included as Blu-ray extras. Brad Pitt's character still wears a wedding ring throughout the film.