Character mistake: In the meeting in 1984 when Jason Bateman first appears they have players on the whiteboard in the background. They have "Hakeem Olajuwon." He didn't put the H back in his name until 1991. So it should have been "Akeem Olajuwon." (00:08:40)
Factual error: In the introduction to the movie, set in 2002, a young Adonis has a Naruto: Shippuden poster in his room. Naruto: Shippuden did not premiere until 2007.
Continuity mistake: The amount of tomato juice in Lou's [Lily Tomlin] glass fluctuates with camera angle/distance, increasing two times. More distant views from the table show about one-third full, whereas close-ups show about one-half full. (00:27:10 - 00:28:10)
Continuity mistake: After Marcus moves his coffee cup and glass of water, the water is about its width away from the coffee cup, but is closer when the camera shifts to the opposite side of the table. When Sonny gets up to leave, the coffee cup and glass of water suddenly exchange places. (01:02:15 - 01:03:20)
Factual error: In the famous "Rumble In The Jungle" fight between George Foreman and Muhammad Ali, the movie portrays Foreman as fighting out of the red corner and Ali fighting out of the blue corner. In the actual fight, Ali fought out of the red corner and Foreman was in the blue.