10. Mick Stoltenberg, junior defensive tackle: What's the thing you heard the most about the 3-4 defense the first week after Bob Diaco was hired? Better have a nose tackle that's legit.
9. Joshua Kalu, senior safety: Spring ball generally produces more nuggets than major headlines. But Kalu's move from corner to safety was actually a significant story, because it's a move that shapes the whole secondary.
Kalu's versatility is just as important as anything. Here's a good quote about Kalu from NU safeties coach Bob Elliott that's worth repeating regarding why the senior might fit that position well: "Our field safety has to go out there and cover the slot and that gives us a real advantage, I think, with a corner type covering the slot receiver -- that is good for us.