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.
Continuity mistake: When Bagger Vance is explaining what it means to see the course, he tells Junuh to watch Jones. Jones performs some airshots against the audience, then in a split second, he makes an airshot against the course, then back to the audience. He sure is fast.
Factual error: On the final hole of play, Damon should have placed his ball back to its original position and taken a one stroke penalty. He did not replace the ball to its original penalty, so he would have been deemed to playing the ball from the wrong position, which is another penalty stroke.
Continuity mistake: When Junuh kisses Adele at the big party outside by the dancefloor, their heads keep changing positions. First, Junuhs head is on the left side of Adeles, then on the right, then back to left.
Revealing mistake: Junuh is sitting on the bench just after round one. Adele comes over towards him and sits down, but by doing so she reveals a pair of trainers.
Factual error: At the end the narrator says Walter Hagen only played exhibition matches. This is untrue. He played on for years and won several PGA events in the 30s.
Factual error: In the last round of play, Walter Hagen is surrounded by water and asks his caddy for a cigarette. He then tries to light it several times with an automatic "click" lighter. The automatic lighters in the 1920s did not click.
Continuity mistake: While Rannulph Junuh is driving the pickup to escape the town the truck is on a gravel road. When the camera focuses on Matt Damon's face through the windshield, the road shown in the background has a yellow painted center stripe.
Answer: There are many reasons that known actors appear in movies and are uncredited. Cameo appearances often go un-credited. Actors sometimes do a cameo if they are friends with the director or the other stars. It can add an unexpected surprise for the audience. There are also contract and payment issues if an actor receives billing in the credit. Jack Lemmon, who was the narrator for the story, may have preferred not being credited. He was certainly a big enough star that if he wanted to be listed in the credits, he would have received proper billing.
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