Yankee fans will have to look a little harder for deals on souvenirs, food and drinks near the ballpark.

The NYPD is cracking down on illegal vendors following a spree of violence that included a seller killing one rival and wounding another last month.

“The grace period is over,” said Inspector Kevin Catalina, commanding officer of the 44 Precinct. The area around the Stadium is supposed to be vendor-free.

“We’ve been out to warn them and say, ‘You can’t vend here anymore and if you do, you will be arrested,’ ” Catalina said.