1. The play of Terence Steele
Collectively, the Cowboys offensive line has done a tremendous job keeping Dak Prescott upright this season. Prescott's been sacked 29 times, which is the 14th-most of any quarterback. Given that Prescott is leading the MVP race right now, you'll take that number.
What's concerning, though, is that Steele has accounted for nearly a quarter of Prescott's sacks. According to Pro Football Focus, Steele has allowed seven sacks. Only five OTs have allowed more sacks. He's also allowed the second-most QB hits (9), the third-most pressures (44) and the eighth-most hurries (28) at the position.
Granted, Steele's only allowed one sack in the last five games, but he's accounted for nine pressures and seven hurries in the last two games. Prescott is utterly dominant against the blitz, but Steele's wonky play post-ACL surgery is a major concern as Dallas hits the most important part of its schedule.
His performance in Week 9 against the Eagles cost the Cowboys big time and his Week 14 performance vs Seattle -- when he gave up five pressures and four hurries -- almost cost Dallas a massive win.