|Widely considered the top linebacker available and almost guaranteed to be selected among the top 10 overall, Mack's top-end speed coupled with his size makes him a potential hybrid as either a pass rusher in a 4-3 set or an outside linebacker in the 3-4. Mack dominated at the University of Buffalo, earning three all-Mid-American Conference first-team selections, the 2013 MAC defensive player of the year and the 2013 Jack Lambert Award as the nation's top linebacker. He also was a second-team All-American this past season, totaling 100 tackles - 19 for losses - as well as 10 1/2 sacks, seven passes defended, five forced fumbles and three interceptions in 13 games. What sets Mack apart is incredible first-step quickness along with excellent football instincts, quickly knowing where the ball is and finding his way there quickly. He is a fierce hitter, often driving ball carriers backward since he gets lower pad level and hits on the rise. Mack is very competitive with a strong work ethic and plays through the whistle on every snap. He improved and honed his skills from year to year with the Bulls and was able to regularly disrupt opponents despite them game-planning to stop him. Mack has the speed to drop back in zone coverage to cover tight ends, pursue the play from behind the line of scrimmage or quickly get to the flat to find a running back coming out of the backfield. He shaved nearly one-tenth of a second off his 40-yard dash time at Buffalo's pro day, getting hand-clocked between 4.53 and 4.55 seconds after turning in a scouting combine time of 4.65. At the combine, he placed in the top five for linebackers in four categories. If there are any concerns about Mack, it would be the level of opposition he faced in the MAC and occasionally playing out of control, though that could also come from being asked to do so much as the best player on defense. Mack will be an immediate contributor at the next level, and the only question is whether he lines up as an end or a linebacker - or even both.