He is able to stuff lanes inside and keep his talented linebackers free to make plays. While he doesn't flash anything special, he will provide a consistent and dependable inside presence for an NFL 3-4 defense and should expect to be taken in the second round.
He is a strong, secure tackler and is very effective when getting double teamed -- although he is effective at keeping lanes clogged when needed. He is a smart player who understands his role. The athletic ability and balance he displays at his size is what makes him such an effective space-eating nose tackle.
He has issues when rushing the passer and has some trouble squeezing the pocket using athletic ability; his production usually comes from his strength.
Although he can take on a double team, it is uncommon for him to beat it and make a play. Chapman will also move off the line of scrimmage slowly when tired. He will need to work on his overall conditioning to have value in the NFL beyond being a two-down player."
Like Cody and to a lesser extent Dareus, Chapman is never going to make the type of plays that earn a great deal of attention from the common football fan. He started 12 games last season, recording 31 tackles, including 3.5 tackles for loss and a sack. Despite the lack of flashy statistics, Chapman's ability to control the middle made life difficult for opposing offenses attempting to run the football.
Chapman provides little in terms of a pass rush and though he gives good effort to the flanks in pursuit, he is quickly evaded. Teams operating out of the 4-3 alignment will consider him due to his ability to shade over the center, but Chapman's best fit in the NFL is precisely what it has been over his career with the Crimson Tide -- playing nose guard in the middle of a three-man line.
Pass Rush: Possesses at least average burst off the snap, but lacks the lateral agility and closing speed to be a consistent pass rush threat at the NFL level. Uses his excellent weight room strength to shove his opponent upfield and can disengage with quick hands and a reasonably effective swim move (either arm). Good effort.
Run Defense: Clearly his best trait. Has a short, stumpy build so he typically wins the leverage battle. When he does so, Chapman can be tough to move, even showing the ability to handle double-teams. Excellent weight room strength translates well onto the field. Good stack and shed defender. Alert defender who recognizes the trap block and possesses enough quickness to beat his opponent to the spot. Lacks the sustained speed to chase down ball-carriers, but puts good effort into his lateral pursuit.
Explosion: Has an explosive initial punch to push the offensive lineman back onto his heels. Can generate a big hit when he gets moving. Not an explosive athlete, overall, despite his gaudy weight room numbers.
Strength: Violent hands and good upper body strength to hold up inside versus the run. Flashes some explosiveness as a hitter. Can rag doll ball-carriers, tossing them to the ground easily.
Tackling: An effective drag down tackler due to his upper body strength. Lacks the lateral agility and balance to handle quick ball-carriers in open spaces. Appears to have only average arm length. As such, ball-carriers too often are able to shield him with a stiff-arm and run away from him. Shows good effort in lateral pursuit to the tackle box, but tires quickly and doesn't show enough effort to follow downfield.
Intangibles: Has struggled with conditioning at times over his career. Possesses a good motor, however, and will pursue to the sideline and downfield. Possesses excellent weight room strength. Was the team's strongest player as early as his redshirt freshman season, owning a 480 pound bench press in 2008. He is now benching closer to 580 pounds, according to the Alabama strength and conditioning staff and has a 630 pound squat."
Gets himself in trouble at times shooting his hands too high into contact, but works hard to gain proper hand placement through the play and maximizes his length well in tight quarters. Is limited making plays off his frame. Allows himself to be easily sealed from the action inside and isn’t real sudden when asked to disengage and range off his frame.
Does a decent job fending off slide down blocks and can play the piano in tighter areas down the line, but when asked to work more in space, he struggles to put himself around the football. Displays a decent get off for his size vs. the pass.
Isn’t a guy who will threaten gaps off the football, but plays with a good motor, keeps his base down and can fight through blocks working his way up field. Doesn’t have the kind of body control to sudden change directions skill to quickly slip blocks, but does display some violence with his hands when asked to disengage while keeping the integrity of the pocket and fending off blocks as the QB steps up.
Impression: Has the making of a starting caliber nose at the next level in either a 3-4 and 4-3 front. Can consistently anchor on contact, is long armed and tough to move off the football. Also, is a better pass rusher than given credit for."
Provides limited upfield quickness and pass-rush value and needs to improve his strength and conditioning in order to play with increased power and stamina.
Smart, hard-working, competitive lunchpail type."
He's a steady force in the middle, though his game lacks the flash and dynamism of some noses the past couple of seasons. But if there's a team looking for a tough-to-move nose in the second or third round of the 2012 NFL Draft, Chapman would be a perfect fit.
• Is short and gets low and uses natural leverage, which helps him routinely beat and offensive lineman.
• Is mainly a space filler of a nose tackle. Chapman is hard to move off the blocks, but he's not a very agile lineman.
• Shouldn't be relied on as a pass rusher, which makes you think he may only be a two-down lineman at the next level.
• Gets most of his penetration on passing plays by pushing the offensive lineman backward into the pocket.
• Uses a good leg drive to push forward and maintain his positioning.
• Can be a dangerous tackler when he hits someone on the move. Has used a devastating pancake tackle."
Squat NT is very strong and very difficult to move off the line of scrimmage even when double-teamed; also does a nice job tying up opposing blockers;
Has decent quickness for a big man, but overall isn’t very nimble or agile and does not make many plays of his own especially in the backfield; had 31 tackles last fall, but only had one sack and 2.5 other tackles for loss;
Missed most of the 2007 season with an undisclosed injury."
Stays low and wins most battles for leverage; strong, violent hands with explosive hand punch, solid leg drive, keeps his legs moving, very good stack and shed type player; can push the pocket, can bull rush and overpower blockers when pass rushing...
Wide base and low center of gravity, solid anchor, doesn't give up an inch of ground, is too stout to be moved around, base strength is phenomenal; eats up blockers, collapses running lanes, keeps linebackers clean and allows them to roam free into the backfield...
Lunch-pail type player, is smart and works hard, plays with an impressive motor; anticipates snap count, above average recognition skills, plays through the whistle, responds well to coaching and spends a lot of time in the video room...
Is more of a drag-down tackler than a fundamental wrap-up and drive through tackler, tosses ball carriers to the ground with ease, can also deliver some explosive hits...
Steady force in the middle, the anchor of Alabama's defense, has experience in both three and four-man fronts under Nick Saban; fifth-year senior has played in 53 games, including 25 career starts...
Saban might be the best coach in the country for developing interior defensive line prospects, including Terrence Cody and Marcell Dareus in the past two drafts...
Rising prospect in a weak nose tackle class, classic zero-gap NT prospect who fits in a 3-4 but is also a better athlete than people realize, has an underrated first step for his size and moves well for a 300+ pounder, could play defensive tackle in a 4-3 as well; has a low ceiling but reasonably high floor...
Nicknamed 'The Incredible Hulk' by his teammates, maximum bench press total of close to 580 pounds and 630 pound squat, according to CBS Sports' Rob Rang... Played through a torn ACL and meniscus suffered October 1 vs. Florida en route to Alabama's 14th national championship.
Negatives -- A little stiff, not real nimble or agile; not a pass rusher, doesn't offer much in terms of pursuit, should be rotated out in passing situations, a one-dimensional type of player with below average lateral agility and closing speed... Can struggle to maintain balance when changing direction... Lacks ideal height and arm length is shorter than ideal...
Isn't going to dominate a box score, not his role, doesn't make plays off his frame but looks really good on film; not quite the playmaker that former teammate Terrance Cody was, but a similar prospect and should be drafted in that range (late second round)...
Questionable stamina, will need to monitor conditioning, especially once he starts collecting NFL paychecks, weight has fluctuated while at Alabama...
Missed the final 10 games of the 2007 season with an undisclosed injury, ended up taking a medical redshirt... Will not participate in the Senior Bowl and is unlikely to be able to workout at all prior to the draft after undergoing surgery to repair a torn ACL and a torn meniscus in his left knee, and will probably begin his rookie career on the PUP list."