Plot hole: Check out the final routine at the end of the movie for the Clovers. Watching carefully, approximately 20 seconds into the routine you will see two girls on the left hand side running face to face into each other. If this had been a proper competition they would have lost because it was a major error in the routine.
Plot hole: Junuh gets the lowest score on the 17th hole in the final round, which puts all the players at 'even'. It should therefore have been his honour 18th tee. He actually tees off last, which would indicate that Jones and Hagan had bettered (or at least matched) his score on the 17th.
Plot hole: In the scene where Willie takes Skip to the army recruiter, the recruiter classifies Skip as 4-F because one of his testicles hasn't dropped. But seconds later when Skip stands on his rear feet, it is apparent that Willie, well let's just say that a pair beats an ace high.