Spectators walk in between courts during Day Two of the 2012 US Open. (Photo by Cameron Spencer/Getty Images)

NEW YORK (CBSNewYork/AP) — The US Open got off to a frustrating start for many fans.

The USTA has implemented new safety procedures for this year’s tournament. All fans will have to go through metal detectors for the first time.

As WCBS 880’s Peter Haskell reported, the additional security checks had some fans lined up waiting to enter the grounds for up to two hours earlier Monday. The Associated Press reported that the lines snaked for a quarter mile or more — from the exit point of the No. 7 train to the east entrance of the Billie Jean King Tennis Center.

“This is terrible, this is horrible. I’ve been going to the US Open for the last 10 years, I’ve never seen it like this,” one fan told Haskell.