When Bonasera and Parsons are in the morgue after discovering evidence that ties two cases together, Bonasera refers to one victim as George Novotny. In the rest of the story, he is named Gilbert Novotny.
When Danny and Aiden go to search Gilbert's seat at the game, they are suppose to be at Yankee Stadium, but it is clearly not Yankee Stadium.
The first aerial shot clearly shows it's Candlestick Park in San Francisco. The roof of the first base dugout has a sign saying "Giants".