Where's Security? As Fans Fight in the Stands at U.S. Open

Great video caught by a fan as two fans get animated and argue during Novak Djokovic's match Thursday Night at The U.S. Open.

Not sure if the argument was over the seats or what, but it got ugly when the 80-year old guy goes after the "Jersey Boys" wannabe.

All three were ejected from the stadium and banned from the grounds.