Continuity mistake: Early in the film, when Ted Knight arrives at the final hole and Rodney calls out "1000 bucks you miss the putt", we initially watch Ted line up the putt and it is only about 2 feet long (shoulder width). The shadow from his head is only a few inches from the hole. After getting flustered by Rodney's bet, Ted again sets up over the ball, and suddenly the putt has doubled in length. More importantly, the sky has changed from mostly sunny to considerably cloudy and the shadow from his head is at least 4 feet from the hole.
Continuity mistake: During Lou's speech after breaking up Noonan's fight, the dart board against the back wall in the caddies' shack switches from a regular darts to whatever game is on the back. The position of the dartboard also moves.
Continuity mistake: When Rodney Dangerfield bets the judge $1,000 that he will miss the putt, Lacey's legs switch from being spread to being closed and back again.
Continuity mistake: During the Big Match scene, Al's character is seen sweating profusely, seemingly in an instant.
Continuity mistake: When Maggie and Danny are in her room about to make love, her shirt is down and you can see something under it. The scene changes to a wider shot and her main shirt is further up again.
Continuity mistake: When Danny and Tony get ready to fight, Tony has his hands up in "fighting position." When his brother lands on Danny's back, Tony drops his hands to his side. The next shot where there is a close-up of Tony, he has his hands up in the "fighting position" again.
Continuity mistake: The little boy that is identified as a nephew is sitting right of the father at the beginning. He disappears when Danny puts money in the jar and we can see the father. His chair is even empty.
Answer: It's a single boxed golf ball.
ChiChi