A first-round talent that fell to the second round of the 2016 draft due to knee concerns, Jack was selected by the Jaguars and quickly established himself as a fixture on quality Jacksonville defenses that featured other notable performers like Jalen Ramsey, Yannick Ngakoue, and Calais Campbell. Like Jack, Ramsey and Ngakoue were also 2016 draftees.
In his second professional campaign, Jack started all 16 regular season contests for the Jags and all three of their playoff games, helping the team come heartwrenchingly close to a Super Bowl appearance. He finished the year with 90 total tackles and a strong 71.7 overall grade from Pro Football Focus.
The following year, Jack cracked 100 tackles for the first time in his career and was again considered a solid overall performer by PFF’s metrics. However, the 2018 season was not as successful for the Jaguars as a whole, as the team finished 5-11 and well outside the playoff picture. After that season was over, Jack, Ramsey, and Ngakoue became extension-eligible for the first time, though Jack was the only member of that talented trio to see a second contract with Jacksonville.
In August 2019, Jack inked a four-year, $57MM extension to stay in Duval, though the 2019 season was a forgettable one for player and team alike. For the first time as a pro, Jack missed game action due to injury, as he was shelved for the final five contests of the regular season slate. He received an abysmal 45.9 overall grade from PFF, and the Jags finished in last place in the AFC South for the second straight year.
In terms of both surface-level stats and the advanced metrics, Jack had a bounceback effort in 2020, as he posted 118 tackles, five passes defensed, a sack, and an inteception. Unfortunately, the club finished with a 1-15 record, and after a similarly disappointing showing in 2021 under Urban Meyer‘s brief and disastrous stewardship, Jack was released.
He quickly caught on with the Steelers and recorded over 100 tackles for the third consecutive season, but those tackle numbers were not indicative of his overall effectiveness. Pittsburgh made him a cap casualty in May as part of its overhaul at the linebacker position.
Jack and fellow veteran linebacker Zach Cunningham signed with the Eagles on August 6, and both seemingly had an opportunity to see significant snaps alongside Nakobe Dean (particularly with Shaun Bradley out for the season). But as Jeff McLane of the Philadelphia Inquirer observed just yesterday, Cunningham was more impressive than Jack, who had not seen much action with the first-stringers.
Days away from his 28th birthday, Jack will hang up his cleats with over $50MM in career earnings. We at PFR congratulate the former UCLA standout on a fine career and wish him well in the next chapter of his life.