Continuity: In the match between Loudon and Shute, the referee clearly says "no takedown" as they go out of bounds. Yet, when he brings them back to the line, Loudon takes the "down" position and the score is 2-0 in Shute's favor, indicating a takedown has been awarded.
Revealing mistakes: The boxes of detergent that fall on Louden at the supermarket are clearly empty.
Boom mic visible: As Louden and his father move to a corner to speak privately in the restaurant, the boom mike can be seen in the bottom of the screen between them.
Errors made by characters (possibly deliberate errors by the filmmakers): During the weigh-in, when Louden is seen standing next to Chute, it is clear that Chute is twice the size of Louden. Also, when the 101 pounders are weighing in, it is clear that due to their muscular physique, they weigh at least 130 pounds.
Continuity: The wristbands on the referee's are on the wrong arm. The red wristband should be on the left wrist, and the green band on the right wrist.