Report: Saints' Armstead out 3-4 weeks with pectoral injury

The New Orleans Saints are expected to be without star left tackle Terron Armstead for approximately three-to-four weeks because of a pectoral injury, a source told NFL Network's Ian Rapoport.

Armstead was forced to leave Sunday's Week 10 win over the Cincinnati Bengals with what the team called a shoulder injury. He was replaced by Jermon Bushrod.

The 27-year-old Armstead is ranked as the No. 1 offensive tackle in the NFL this season by Pro Football Focus. He's anchored a Saints offensive line that's revered as one of the league's best.