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.
Factual error: In the ending credits where the music used in the film is listed, Neal Schon's first name is misspelled "Neil".
Answer: It's a single boxed golf ball.
ChiChi