Williams, who grew up playing rugby and basketball in Brisbane, Australia, only took up football at the age of 15. Once he joined the sport, however, it became obvious that his combination of size, power and athleticism could result in big things.
Coaches from the University of Hawaii quickly recognized his talent when they were in Australia performing at a clinic and they got Williams, then 16 years-old, to commit to their program. It was soon discovered that Williams was missing an English and math class. Rather than spend another year in the classroom so that he could play at Hawaii, Williams elected to go to Western Arizona Community College. There, he quickly proved himself to be a man amongst boys, posting 76 tackles, 13 tackles for loss and six sacks over two seasons (18 games) and quickly earning recognition as one of the elite JUCO prospects in the country.
He eventually chose Alabama over LSU, Oklahoma State, Southern California, Arkansas, Oregon State, Mississippi and Tennessee.
In his first season with the Tide in 2011, Williams started all 13 games as a five-technique defensive end, posting 24 tackles, including four tackles for loss and half a sack. Due to his agility, Williams was moved inside to defensive tackle on passing downs.
He transitioned to nose guard in 2012, putting together a second-team All-SEC season. Williams anchored the No. 1 scoring defense in the nation playing the zero-technique position he took over during spring practice.
He has even seen some snaps on offense in goal-line situations as a lead fullback and with his rugby background, he hopes to get his hands on the ball. At 6-3, 320, he has the muscle and agile feet to line up in any defensive scheme.
Possesses unbelievable weight-room strength (600 pound bench press) that translates well onto the football field due to his use of leverage and surprisingly good technique considering the fact that he's a relative neophyte who only took up the game at age 15 and has played just four seasons of football in the United States.
Has improved his use of hands over his two seasons at Alabama and has developed into a cognitive defender capable of reading the action, shedding the block with heavy, active hands and making the tackle in the hole.
Has the length to play outside as a five-technique defensive end, a role in which he initially played during his junior season with the Tide before sliding inside to the nose as a senior. Good phone-booth quickness and plays hard, competing to the whistle.
Also served as Alabama's short-yardage fullback in 2012, a testament to his power and aggression. An ascending talent with passion and work ethic to improve.
WEAKNESSES: Bit of a one-trick pony as Williams does not possess the quickness or the agility to collapse the pocket as a pass rusher. Must do a better job of protecting his knees as he is susceptible to cut blocks. Too often raises his pad level at the snap, negating some of his power and making him all the more vulnerable to cuts, as he possesses only moderate flexibility.
Has to do a better job of getting his hands up in passing lanes as he rarely gets home as a pass rusher (just three passes broken up in 25 career starts at Alabama).
Plays with good effort but lacks lateral agility and struggles to knock down ballcarriers with any room to maneuver.
COMPARES TO: Vince Wilfork, New England Patriots -- Like the Patriots' run-stuffing nose guard, Williams isn't going to pressure the quarterback often but his size and strength will make him a force in the middle.