Here is what has come before:Prelim - “Colbert Specials” of the 2018 Draft ClassPart 1 – Breaking Down the Steeler Needs at CBPart 2 – Breaking Down the Steeler Needs at ILBPart 3 – Breaking Down the Steeler Needs at EDGEPart 4 – Breaking Down the Steeler Needs at WRPart 5 - Breaking Down the Steeler Needs at RBPart 6 - Breaking Down the Steeler Needs at SAFETYPart 7 - Breaking Down the Steeler Needs at TEPart 8 - Breaking Down the Steeler Needs on the OLTo end the series we will examine what is simultaneously the strongest part of this year’s draft class and one of the Steelers’ lowest priorities: defensive line.Over the past few years BTSC has discussed the evolution of the Pittsburgh D-Line many times T. J. Watt Jersey , explaining how the team used to play a 2-gapping “Okie” system where the front three DT’s occupy four to five offensive linemen, thereby keeping the linebackers free to fly around and make plays; how and why that shifted to a 1-gapping “Eagle” system in which the DT’s use penetration to disrupt opponents, with the linebackers cleaning up through the chaos; and how the rise of spread offenses has effectively removed the Nose Tackle from our defense for 60-70% of all snaps, making the 2-4-5 a/k/a 4-2-5 a/k/a 4-3 Over/Under formation almost as much of the “base” as the nominal 3-4. I love all that X’s and O’s stuff but this isn’t the time and place. Bottom Line: The Steelers use 2陆 “starters” on the Defensive Line, and have three all- or fringe-all-pro caliber players to fill those slots. In other words, barring injury the team has more star power at the position than it can fully use.That isn’t to say we should just ignore the position. The Defensive Line’s importance to a defense can’t be overstated; DL’s get a bigger share of bumps, bruises and joint manipulations than almost anyone else; the resulting injuries and exhaustion makes depth a bigger concern than most other positions; and teams that don’t have five Size XL monsters will be helpless on short yardage plays. Plus there’s the fact that much of Pittsburgh’s 2018 depth at the position will be free agents in 2019. So let’s start by looking at the current roster:Cam Heyward. Team captain, team leader, fan favorite and star. Signed to a long term contract.Stephon Tuitt. Maybe even better than Heyward when he’s healthy. Also signed to a long term contract.Javon Hargrave [Final Year of Rookie Deal]. The 2016 Round 3 pick that BTSC would have picked in Round 1. Were we ever happy when his name got called! And were we ever right. Came into his own as a budding star in 2018 that opposing coaches expressly warned about in pregame press conferences.Tyson Alualu [Unrestricted Free Agent]. A 2010 1st-round bust for the Jaguars who has been a superb backup here in Pittsburgh. Will he get starter time and money elsewhere?L.T. Walton [Unrestricted Free Agent]. Pittsburgh chose him in the sixth round of the 2015 as a boom-or-bust athlete. He boomed enough to raise hopes and easily secure a backup slot, but in 2018 was the clear #5 behind the three starters and Alualu. Arguably the #6 behind McCullers too, though Big Dan has more of a specialty job.Dan McCullers [Unrestricted Free Agent]. The eternal “if only.” He finally took a step up in 2018, at least enough to fight off a challenge from 7th Round pick Joshua Frazier (now out of the league). His job is to be an immovable object in short yardage situations. He’s been occasionally effective at doing so.Conor Sheehy. A hardnosed, blue-collar powerlifting champion who’s a tweener for the NFL at 6’4” and 295 lb. The Packers took him in 2018 as a UDFA. If he makes a major Sophomore Leap he will be ready to fight for some kind of deep backup role, but ‘major’ is the operative word.Lavon Hooks. A 2016 UDFA for the Packers with good size (6’3”, 310 lbs.) and decent athleticism, but he is running out of chances. He hasn’t managed to work up to Journeyman status yet but he is still young enough to have legitimate dreams that things might someday click.That is a well-stacked roster! The only issue is contracts. The top three are all you could reasonably hope for and one assumes that Hargrave will get the extension he’s earned for 2020 and beyond. No issue there. But literally all the established depth (three out of three) consists of free agents who could depart. It seems more likely that one or two will sign a relatively inexpensive, short term deal but who knows? In an case, those are the men a draft pick could legitimately hope to challenge so let’s look at the available talent.Or maybe not just yet.How do you describe what may prove to be the best Defensive Line class in living memory, and maybe the best ever? I am going to start by disappointing all the draftniks who read my articles. Sanity demands that we move all the players who deserve to get picked in Rounds 1-3 onto an Ain’t Gonna Happen List. They are too much in demand by other teams; the Steelers would get too little bang for the buck compared to other positions; and there are just too many of them to spend all the space it would take for descriptions.The Ain’t Gonna Happen ListDL Ed Oliver, Houston. 6’2”, 290 lbs. Top 10 talent.DL Quinnen Williams, Alabama. 6’3”, 285 lbs. Top 10 talent.DL Jeffery Simmons, Miss. St. 6’4”, 300 lbs. Top 10-15 talent.DL/EDGE Rashan Gary Jerome Bettis Jersey White , Michigan. 6’5”, 283 lbs. Top 10-15 talent.DL/NT Dre’Mont Jones, Ohio State. 6’2”, 295 lbs. Round 1 talent.DL Jerry Tillery, Notre Dame. 6’7”, 305 lbs. Round 1 talent leavened by effort concerns.DL/NT Christian Wilkins, Clemson. 6’4”, 315 lbs. Round 1 talent.DL Terry Beckner, Jr., Missouri. 6’4”, 295 lbs. Round 2-3 talent.DL Isaiah Buggs, Alabama. 6’5”, 286 lbs. Round 2-3 talent.DL/NT Dexter Lawrence, Clemson. 6’4”, 350 lbs. Round 2-3 talent leavened by a PED suspension.DL Charles Omenihu, Texas. 6’6”, 275 lbs. Round 2-3 talent.DL Gerald Willis, Miami. 6’3”, 300 lbs. Round 2-3 talent.DL/NT Renell Wren, Arizona St. 6’4”, 295 lbs. Round 2-3 talent.Film watchers could easily fall in love with any of those players and the Steelers might certainly pick one if he fell to the point where the BPA bargain was too rich to ignore (or of course if there is something going on behind the scenes that we do not know about). But it just isn’t worth the brain cells and article space to discuss them.This next group includes the ones that Nick Farabaugh and I have identified as team fits for one reason or another. The basic criterion is someone who might be available in Round 6 or 7 even if a neutral evaluator would expect him to get picked in Round 3-5. “Unlikely” is okay by us, just not “absurd.” Their Pittsburgh-specific value will of course change depending on who the team (re)signs in free agency. If both Alualu and L.T. Walton depart, the F.O. will be looking for length and explosiveness; i.e., lesser versions of Tuitt and Heyward. If Big Dan McCullers is gone the team will want an immovable object for short yardage situations. Etc.The Options On The BTSC Big Board: [fn]5:01 DL Zach Allen, Boston College. 6’5” James Conner Jersey White , 282 lbs. You’ve got to love tough guy grinders who stand up Offensive Tackles in the run game and beat them on passing downs with grit, persistence and an array of subtle but nasty hand fighting and leverage techniques. Alas, but he’s a pure, Day Two DE for a 4-3 team, without the bend and overall athleticism needed to play OLB in Pittsburgh. The grade would be even lower if there was no chance he could bulk up into a smaller Defensive Tackle. 5:01 DL Demarcus Christmas, Florida St. 6’4”, 308 lbs. A solid player with the sort of explosiveness the Steelers have been favoring.5:01 DL/NT Daylon Mack, Texas A&M. 6’0”, 320 lbs. A 5-star recruit who fizzled and underperformed through his college career until he suddenly started to get it in the back end of 2018. A dazzling and dominant performance at the Shrine Game started buzz to the effect that he’s finally arrived. Hidden as he is behind the obvious superstar prospects who will go on Days 1 and 2, could Daylon Mack be the defensive line steal of the draft?5:01 DL Anthony Nelson, Iowa. 6’7”, 271 lbs. A good looking 4-3 anchor-type DE who will fit some other team a lot better than Pittsburgh, where he’d be asked to bulk up into a mobile Defensive Tackle rather than a Size XL Edge player. His biggest flaws are a lack of bend and ability to play in space, both of which make him unsuited to the 3-4 OLB role. 5:01 DL/NT Olive Sagapolu, Wisconsin. 6’2”, 345 lbs. A mid-round immovable object.6:01 DL/NT Greg Gaines, Washington. 6’1”, 322 lbs. An immovable object with good strength and leverage but no real pass rush ability.6:16 DL/NT Edwin Alexander, LSU. 6’3”, 339 lbs. A massive, fairly explosive NT who fills up space but greatly needs to work on his pad level.6:16 DL/NT Khairi Clark, Florida. 6’1”, 315 lbs. Rawer than raw with little to no explosive ability off the line. His ability to bull rush may earn a roster spot somewhere but he has massive work to do if he ever wants to be more than a gap plugging run stuffer.6:16 DL/NT Khalen Saunders, W. Illinois. 6’2”, 320 pounds. Want a late round flier who’s on the board for a very good reason having nothing to do with football? Watch this and you won’t even think of disagreeing. Last time I saw something like that it was Jason Pierre-Paul at the Combine Womens Jerome Bettis Jersey , and he turned out okay...6:16 DL Daniel Wise, Kansas. 6’3”, 290 lbs. A pure penetrator with good 1st-step explosion but questionable ability to hold up if that trick fails. A standout at the Shrine Game where he regularly beat up on Centers and Guards alike. The MAC wide receiver looks to be a great fit within the Pittsburgh Steelers’ offense."WhiteFanposts Fanshots Sections Latest NewsSteelers Film Room2018 NFL Draft AnalysisLatest NewsLatest NewsPro Football Focus ranks Diontae Johnson as one of the 2019 NFL Draft’s ‘Best Fits’New,51commentsThe MAC wide receiver looks to be a great fit within the Pittsburgh Steelers’ offense.EDTShareTweetShareSharePro Football Focus ranks Diontae Johnson as one of the 2019 NFL Draft’s ‘Best Fits’Andrew Weber-USA TODAY SportsMany NFL Draft experts are enamored with grades after the draft process has concluded. We here at this establishment are as guilty as any, but sometimes what matters the most is the overall “fit” with a team.This terms is clearly referring to how the athlete’s skill set translates with how the team likes to do business. For instance, a 4-3 defensive end isn’t always going to transition well to a 3-4 outside linebacker. Therefore, this wouldn’t always be considered a good “fit”.The fine folks at Pro Football Focus recently ranked the best fits of the 2019 NFL Draft, and low and behold there was a Steelers draft selection who made the cut. None other than Toledo wide receiver Diontae Johnson. See what PFF had to say about Johnson, and why he is such a good fit for the black-and-gold offense.The path to the field is certainly available, but not certain for Johnson. If the team has him as only a slot receiver, he will have to be out the likes of Eli Rogers and Ryan Switzer to get snaps in that regard. Considering he can play the outside as well, Donte Moncrief and James Washington stand in the way of him becoming a fixture for Ben Roethlisberger in the offense.If you look at the names I just mentioned, it goes to show there is a chance Johnson can impress and see more snaps, but the reality is although the fit might be there, nothing is certain for the rookie wide receiver on Day 1. for his playing time, but even in this position he will have to show he can bring more to the table than Switzer, considering Switzer handled both kickoff and punt return duties in 2018.Fans should be excited to see Johnson, not just because he has many of the traits Antonio Brown has/had coming out of Central Michigan, but because he could be a valuable weapon in Randy Fichtner’s offense. His route running, quick cutting ability will work well alongside JuJu Smith-Schuster in a scheme which should result in severe matchups for opposing defenses.What are your expectations for Johnson in 2019? Let us know in the comment section below, and be sure to stay tuned into BTSC for the latest news and notes surrounding the black-and-gold as they head into offseason workouts.