The tear the New Orleans Saints were on during the middle of the 2018 Season, actually from Week 2 through Week 12, came to a crashing halt on the road in Dallas as the Saints offense sputtered. You can point fingers at a few places, but the main culprit was the loss of left tackle Terron Armstead to a pectoral muscle tear in Week 10.
Armstead at left tackle is the anchor, captain and best player on the Saints offensive line. For most of the 2018 Season, he was ranked the best tackle in the NFL by Pro Football Focus, He never underwent surgery on the injury.