The New York Giants players can grow frustrated and criticize head coach Tom Coughlin for the struggles at their own risk. What could very well happen as a result of criticizing the two-time Super Bowl winning coach is a punch in the mouth. 

Justin Tuck has already put his teammates on notice. See, things are going pretty badly for the G-Men these days. They've started the season at 0-4 and absolutely nothing about this football team looks good at this point. 

Blame it on anything but the head coach, though, unless you're ready to square up against the Giants defensive end. 

"If anyone turns on our coach, I would be the first one to punch him in the mouth," Tuck said after Sunday's loss to the Chiefs. "Put that in print. It better not happen, I know that."

Who's up to the challenge? Who would dare? 

But truthfully, the Giants could probably use a lot of introspection at this point. That goes for the players and coaches.