Over the last couple of weeks I've seen a few references to Penei Sewell the consensus top tackle prospect in this year's draft. The Lions have him over on the right-hand side - not LT where he played. They've looked like this:
He was flipped to RT because they already have a high-end LT in Taylor Decker. Exactly why they drafted a guy to play RT at 7th overall I'm not sure. If Fields (or Jones for that matter) pan out as elite level QBs, there will be some tough questions here in Detroit. Overall though, he's a rookie at a new spot, he will have some struggles. He's looked pretty decent in camp though from what the local media says.