Packers OLB Clay Matthews vs. Cowboys LT Tyron Smith: Matthews, one of the NFL’s star linebackers, leads the Packers in sacks with six. He has a knack for finding the right pace or twist to his rush that confounds even the best blockers. Just 23, Smith is steadily ascending into the top level of pass and run blockers in the league. There is a Pro Bowl feel to him. Matthews will be a tough test of Smith’s credentials.