In his sophomore season, he recorded 12.5 sacks and 19 tackles for loss, breaking school single season records for both. He was voted a first-team All-American by Walter Camp and AFCA and multiple fan sites. He received second-team All-American recognition from the Sports Network and Associated Press. He was also voted Defensive player of the year for the conference by the coaches and media and won the school's male athlete of the year award.
Coming into his junior year Phil Steele ranked Tull as the number 1 defensive end and number 6 overall player in the nation for the FCS. During the Mocs game against Furman that year, Tull had 3.5 sacks and 2 forced fumbles and was named national defensive player of the week by the Sports Network. He led the UTC Mocs to a co-conference championship and after the season was voted a consensus first-team All-American by every major publication, making Tull the first Unanimous All-American in school history. He broke the school's all-time sack record and was again voted the conference defensive player of the year by the league's coaches. He was awarded the elite defensive end award from the CPFA and also became UTC's first academic All-American in football by having above a 3.5 grade point average in Exercise Science. He finished his junior season as a finalist for the Buch Buchanan award, given annually to the top defensive player in FCS. He is UTC's all-time sack, tackles for loss, and forced fumble leader.
His senior season was again filled with awards leading UTC to a 2nd consecutive championship while earning unanimous first team All-American honors, Chattanooga's Male Student Athlete of the Year, first team academic All-American from Capital One, first team All-Southern Conference, the Champion Within Award from the Tennessee Sports Hall of Fame, Athlete of the Year from the Greater Chattanooga Sports Hall of Fame, Southern Conference defensive player of the year, and the Southern Conference Male Athlete of the Year.
Tull is the SoCon’s all-time sack leader with 37.0 and Chattanooga's all-time tackle-for-loss leader with 60.0. He was named SoCon Defensive Player of the Year in 2012, 2013 and 2014, becoming the second player in SoCon history to be named defensive player of the year three times; the first was Appalachian State’s Dexter Coakley from 1994 to 1996.[1] He was named a finalist for the Buck Buchanan Award in both 2013 and 2014.[2]
Tull was selected in the fifth round of the 2015 NFL draft by the New Orleans Saints.[3] He later signed to a 2.5 million dollar four-year contract and placed on the Saints 53-man roster.[4] He was placed on the injured reserve early in the season.
On September 3, 2016, Tull was waived by the Saints.[5]
Atlanta Falcons
On September 21, 2016, Tull was signed to the practice squad of the Atlanta Falcons. He was released on October 4, 2016 and re-signed on October 11.[6] He was released on November 8, 2016.[7]
On August 18, 2017, Tull signed with the Los Angeles Rams.[10] He was waived on September 2, 2017.[11]
Memphis Express
Tull signed with the Memphis Express of the Alliance of American Football in 2018 for the 2019 season.[12] He started every game at strong side linebacker before the league folded into bankruptcy in 2019.
Jacksonville Jaguars
On August 9, 2019, Tull was signed by the Jacksonville Jaguars.[13] He was released with an injury settlement during final roster cuts on August 30, 2019.[14]