Corrected entry: During the flashback to Roy's sendoff, his convertible had flush grilles set into the hood. During the rest of the movie, the car had a plain hood instead.
Corrected entry: In the scene when Munson is preparing to bowl his first frame at the end, we see him look at Ishmael who is holding a sign saying "Go Roy". As soon as it cuts back to Roy, Ish is holding a sign saying "Will Work For Food". The cut was very quick, so there is no way he would be able to flip over the sign that quickly.
Corrected entry: In the scene where McCracken gets Roy to pretend they're dictionary salesmen and bowl for money, Roy has to bowl and hit the 6, 7 & 10 pins. When he bowls, you can see the 6, 7, get knocked down, and one of them goes behind the 10 pin, which magically falls down like it was being pulled down with string. It's obvious neither a pin nor a ball hits that 10.
Corrected entry: In the final scene, Roy's rubber hand is pulled off and thrown into the crowd but immediately after you see Roy sitting down with his hand.
Corrected entry: When Roy starts his first roll in the finals, he bowls on the 4th lane from the right, and pins are also set up in the adjacent 3rd lane. As he finishes, he is now on the 3rd lane and the pins in the 4th lane have disappeared. Watch the logo on the wall above the pins to keep track of the lanes.
Corrected entry: At the Championship in Reno, Roy gives the two ladies his 1979 State Championship Ring to keep until he can win the tournament and then pay off his championship dues. He loses the tournament to Ernie McKracken, yet he has the ring after the torunament, because he shows it to the two guys during the brawl outside his car. Since Roy didn't win the tournament, the ladies should have kept the ring.
Corrected entry: In the scene near the beginning of the movie (Roy is grown now) Roy gets out of his car at the local bowling alley. He is putting his jacket on and he rips it. If you look carefully, one minute Roy is facing the camera, and the next minute you get a side view of him.It's a pretty bad skip in the film that almost anyone will notice.
Corrected entry: When the people put Woody's hand in the machine to cut it off you can see the 1979 ring is on his hand that is cut off, but later the ring is back on his fake hand.