4 Detroit Lions who must shine in Week 6 against the Dallas Cowboys

2. CB Terrion Arnold
1. CB Carlton Davis

A 92-yard touchdown naturally skewed things, but Cowboys' wide receiver CeeDee Lamb simply owned the Lions' secondary in last year's matchup (13 receptions for 227 yards and that touchdown).

No one was totally immune from Lamb's abuse in that game. But he had seven catches on as many targets when the now-departed Cam Sutton was covering him, with half (48) of his 96 yards when Sutton was covering him coming after the catch (according to Pro Football Focus).

Arnold's penalty issues early in his rookie season have been well-documented, but Davis is not far behind him with four pass interferences. Three of those came in Week 4 against Seattle, along with a defensive holding, after which Davis was not kind in his assessment of the officiating.

That said, Davis is generally doing well in coverage. Entering Week 6, he is the 10th-best corner in PFF's new Separation Prevented metric. Arnold has improved in coverage, penalties aside, in recent weeks.

The Cowboys, smartly, line Lamb up all over the formation in an effort to get matchups they like. So Arnold and Davis on the outside, and anyone who lines up in the slot (Brian Branch, Amik Robertson), will get a dose of him on Sunday. But if Dallas finds a profitable defender to target with their No. 1 receiver, you can bet they'll keep going after whoever it is. To that end, expect Arnold to be tested early and often.

Lions fans should take the penalties from Arnold and Davis with some grain of salt. At least they're close enough to receivers to invite penalties (ticky-tack or not) for trying to impede them. If Lamb is going to be held in somewhat in check on Sunday, and he will make some plays no matter what, it'll be driven by Detroit's perimeter corners on each end of the experience spectrum having top-notch performances.