The 2016 Notre Dame defense is missing some multi-year stalwarts from last year’s team. It’s a bit more difficult to be as bullish as we were for the offense review yesterday, but take heart folks, there’s still hope. Honest. We’ll take a look at each new starter and what the future might hold for his replacement.

2015 DT: Sheldon Day
2016 DT: Jerry Tillery

Sheldon Day was a four-year starter, a leader, and a disruptive force – he logged 33 tackles last year, which is respectable for a defensive tackle, but more importantly he also recorded 15.5 tackles for loss and 13 quarterback hurries. Jerry Tillery, meanwhile, was the rarest of rarities at Notre Dame as a true freshman defensive tackle who actually contributed. Even so, he faded somewhat down the stretch and was sent home during bowl preparation for a violation of team rules. It’s a lot to ask of any true sophomore defensive lineman to replace Day’s production, of course, so it’s no shame to Tillery here to say that it would be a big bonus if he can even get close to that level. Practice reports have him playing with his hair on fire so far, which gives some cause for optimism.

2015 NG: Daniel Cage
2016 NG: Jarron Jones

I almost didn’t include this position, since Jarron Jones is hardly your garden variety new starter. However, he did miss all of last season, so here he is. Daniel Cage performed admirably in his stead last year but isn’t cut out to do the kind of game-wrecking we saw from Jones in Tallahassee in 2014. If Jones can stay healthy all season, adding that disruptive force back while allowing Cage to move into a rotation role for both interior spots should make the defensive line much stronger overall. If.

2015 WDE: Romeo Okwara
2016 WDE: Andrew Trumbetti/Jay Hayes/Daelin Hayes

Many Irish fans will no doubt point to the next position in our review as the biggest question mark/concern, but for me, it’s weak side defensive end. Romeo Okwara made tremendous strides in 2016, logging 43% of his career tackles (49), 66% of his career tackles for loss (13.5), and 72% of his career sacks (9). Those nine sacks placed Okwara 27th nationally in 2015 and were the most for an Irish player since Stephon Tuitt’s 11 in 2012. Adding to the natural difficulty of replacing that production is the fact that there isn’t a clear-cut choice to replace him, as the position likely be manned by a committee in 2016. Andrew Trumbetti seems likely to draw most of the snaps against passing teams, while Jay Hayes will take the lead against running teams. True freshman Daelin Hayes, who is the most naturally gifted pass rusher of the three, will be deployed situationally in an effort to ease him into play at the next level and protect his surgically-repaired shoulder.

Matching Okwara’s 2015 production would be a tremendous win here, and a sizable feather in defensive line coach Keith Gilmore’s cap. The 18 Stripes magic eight ball says: “Outlook is cloudy.”

2015 WILL: Jaylon Smith
2016 WILL: Greer Martini/Te’Von Coney

There’s no sugar-coating this one – for the second time in four years, Notre Dame has to replace a generational talent at linebacker. Jaylon Smith, who like Manti Te’o before him claimed the Butkus Award, would’ve been a sure-fire top ten draft pick without his bowl game injury; more importantly for the Irish, he was a three year starter, a leader, and served as The Great Eraser of Mistakes last year at the second level. Greer Martin and Te’Von Coney need to forget about trying to be Jaylon, because it’s not going to happen. The good news is that the 2016 Notre Dame defense shouldn’t need them to be Jaylon – if they can produce solid play at WILL, that should be enough to hold down the fort. Both players have looked promising in small sample sizes.

2015 MLB: Joe Schmidt
2016 MLB: Nyles Morgan

Poor Joe Schmidt, like Tommy Rees on the other side of the ball, was thrust into a situation beyond his control, performed as well as he could, and was savaged by large portions of the fan base for it. You can’t win for trying, it would seem… There’s no question that Nyles Morgan is a tremendous upgrade on Schmidt athletically (sorry, Joe). In his third year in the program and under Brian VanGorder’s tutelage, can Morgan bring the same level of mental acuity to the defense that Schmidt did? There are reasons to believe that other changes in personnel will lesson the load on the Mike to handle the brainwork for the entire defense this season, which should make Morgan’s job somewhat easier. I’ll predict significantly improved play from this position, and slightly improved play from the linebacker corps as a whole as a result.

2015 CB: Keivarae Russell
2016 CB: Shaun Crawford/Nick Coleman

Keivarae Russell was a revelation as a true freshman converted running back on Notre Dame’s surprise championship contender in 2012. His play dipped a bit as a sophomore when his responsibilities expanded, and then he developed considerable rust when he missed all of his junior season in the Frozen Five academic fiasco. Last year, it took him a while to shake that rust off and he had some moments where it seemed his head wasn’t quite in the game. He was a senior and a tremendous athlete, and he’s right on the edge of catching on with the Kansas City Chiefs after being drafted in the third round, so I don’t mean to downplay his loss. But I’m not as convinced as many others are that Russell’s 2016 production will be hard to replace; in fact, I think we might actually see an improvement from more consistent play there. Shaun Crawford, and Nick Coleman when Crawford slides inside to the nickel, have all the physical tools and have each looked excellent in camp. Crawford in particular has been a nightmare for Irish receivers.

2015 NB: Matthias Farley
2016 NB: Shaun Crawford

Matthias Farley was the ultimate team player, shuffling from wide receiver to safety to cornerback to nickel back, where as a fifth year senior he lost the starting role to true freshman Shaun Crawford and still didn’t complain. That Farley was named a captain as a reserve nickel back should speak volumes about his demeanor, work ethic, and leadership value. That leadership presence in the secondary will have to come from senior captain Cole Luke in 2016, but Farley’s on-field contributions will most likely be succeeded by Crawford’s. Farley reclaimed the starter spot here when Crawford went down with an ACL injury in fall camp last year; while somewhat limited in coverage, he was excellent in run support, particularly against the option teams. Crawford, meanwhile, has reversed strengths, excelling in coverage but not quite so effective in run support due to his size. The Irish likely will get better pass defense out of this spot from Crawford and use different packages against the more physical teams, such as placing Drue Tranquill in the box more regularly or sliding a bigger corner like Nick Coleman or Donte Vaughn inside.

2015 SS: Elijah Shumate
2016 SS: Drue Tranquill

Elijah Shumate is yet another multi-year starter, who despite somewhat mixed results had been a steady presence in the Irish defensive backfield. He also had arguably the most glorious touchdown that will never count… #RememberThe6. Shumate was a physical force but was less effective in coverage; at 6’1″ and 220 pounds, he was very nearly a borderline linebacker playing safety. Drue Tranquill might be a little sharper in coverage but won’t make anyone confuse him with a corner, and is similarly physical at the point of attack. He might be slightly more versatile, but you can safely expect replacement level play from Tranquill in 2016. Anything more is gravy.

2015 FS: Max Redfield
2016 FS: Avery Sebastian/Devin Studstill

Oh, Max. Max, Max, Max… The star-crossed career of Max Redfield came to what perhaps should be a predictably early conclusion recently when he was arrested for gun and drug possession on a – something – mission, an hour from campus. As talented as Redfield was he could never quite piece a consistent season together, as summarized quite nicely in the last 12 months – a nice play here and there (pick against USC), a boneheaded play here and there (vacating the center of the field against BC), getting sent home during bowl prep, making strides during the summer leadership camp, and then blowing it all to kingdom come with a mind-bogglingly poor late-night decision. Enter sixth year senior Avery Sebastian and true freshman Devin Studstill, who made waves in the spring as an early enrollee and even threatened Redfield’s hold on the starting job. For all the talk about how Brian VanGorder obviously needed to simplify his defense to take the shackles off an uber-athlete like Redfield, Studstill seemed to get up to speed with it very quickly.

The official depth chart released yesterday listed Sebastian as the starter at free safety, but I’m covering both him and Studstill here because (a) I think Studstill will play, and play a lot, and (b) unfortunately, given his history, I’d be surprised if Sebastian can make it through an entire season unscathed. While depth at the position is now an enormous concern with Redfield gone, I think we’ll actually benefit from more consistent play if one of Sebastian and Studstill stays healthy. In fact, following a prop bet laid down by Scout’s Tim O’Malley, I’ll take the over on whether 2016 free safety production can top Redfield’s career production in interceptions (2) and passes broken up (4).