Revealing mistake: In most of the scenes of the film, the famous filly is impersonated by a colt.
Revealing mistake: Dave is racing with the Italians, and the Italian puts his pump in Dave's spokes. In the middle of the bike falling over, you see a horizontal beige object with duct tape on it for a couple of frames, where you should see Dave.
Revealing mistake: In the scene where Brian Clough is at home you can see double glazed upvc windows, even though they were not around until the 1990s.
Revealing mistake: When Ali is in the rain on the pay phone at the motel it is a modern phone, not from the era they were trying to portray.
Revealing mistake: Throughout the racing shots of the movie, the close up shots of the fans in the stands show the same people used multiple times as evident by them wearing the same clothes, poses, etc.
Revealing mistake: When Gus is reading "Sporting News" on the bus right before they meet Tanaka, the headline talks about the Buzz moving to third place. The article, however, is about a trade in the major leagues. (00:32:05)
Revealing mistake: Establishing shots of the party where Chaney will fight Pettibon's guy; when we see the band play and people dance, the footage is rather obviously stopped and reversed to give the impression of a longer shot (evidently they had too little usable film of the crowd dancing). (00:31:00)
Revealing mistake: At one scene at Yankee Stadium when the crowd is panned, someone in the background is wearing a Jeter # 2 jersey. The #2 is reversed, showing the shot was flipped.
Revealing mistake: When Joe drives Camille on his bike, for a brief moment if you look closely a stuntman is driving for him.
Revealing mistake: When Lou and Tommy are in the car at the park, and Tommy is taking the disguise bandage off his head, a very faint outline of Tommy's head is visible under the incomplete special effect.
Revealing mistake: The tapered half of the baseball bat was leaning against the coffee table at about a 60° angle, but after Dave said, "The bat?" the camera showed it sticking straight up from (perpendicular to) the floor. Dave's lower body is then shown walking past the bat (which reaches to his waist) and stopping, at which point the bat fades into his leg until it is almost invisible. The next view of the bat shows it leaning against the coffee table again, but the coffee table is closer to the couch. (00:09:08)
Revealing mistake: When the speaker during the first game played says "This game might have had a different outcome", everyone in the crowd looks at a different spot, but the small kids agree on just looking straight into the movie camera. (00:01:25)
Revealing mistake: The reaction of the jogger being hit by Clark's bat is way too late.
Revealing mistake: When the tiles pop off the wall near the beginning, each pops off right in the middle. The nozzles squirting out the water are obvious.
Revealing mistake: The position of the lamp (upright or tilted) to the left of the screen varies, and the way the light is cast on the wall above and below the lampshade is not realistic. For example, when the upper part of the lampshade is angled away from the headboard, the light projects below the lampshade shorter toward the left of the screen, not elongated. (00:01:00 - 00:03:00)
Revealing mistake: During the Unsolved Mysteries scene, a man is about to play solitaire. Look at the screen, though. It's already dragging cards around.
Revealing mistake: In the closeups the boy is holding a large leaf of seaweed to offer the stallion. But in the long shots at the waterfront he extends an empty hand with no seaweed visible.
Revealing mistake: When Kathy Ireland is trying out, watch one shot from the side and you can tell by body type it's a guy in a wig kicking the ball.
Revealing mistake: During the last Race (the Agua Caliente), Phar Lap's hoof was re-opening from a crack earlier in the movie. When they show the close up of the leg/hoof during the race in slow motion, the "blood stain" keeps moving around on the leg wrap and hoof area.
Revealing mistake: In the opening montage, the article "Rucker Park today - The streetball Mecca" is also the rightmost column of the entirely diff different publication that comes in the following shot. (00:02:25)