The Pennel situation is mystifying. The fact that he's playing with 3rd stringers in the preseason isn't promising, and while he has flashed some power with his long arms at times, he also hasn't looked particularly impressive. That said, Shelton was 'meh' through much of last season and improved with time. JMac played at bizarre moments of preseason games last season and ended up being a key starter. It's hard to read. If you had a gun to my head I'd guess that Pennel makes the roster but I think there's a decent chance I end up dead with that guess. There's a lot of depth, talent, and athleticism at DL and many of those guys appear to be playing better than Pennel right now, or have superior upside. We shall see.