Davis was redshirted as a true freshman at the University of Iowa in 2010. As a redshirt freshman in 2011, Davis played in six games and had two tackles. As a sophomore in 2012, he played in 11 games making eight tackles. Davis became a first year starter as a junior in 2013, starting all 13 games.[1][2] He finished the season with 42 tackles and 1.5 sacks.[3] Davis entered his senior season in 2014 as a starter for the second consecutive year.[4][5]
He competed with Brandon Williams and Christo Bilukidi throughout training camp for the vacant starting nose tackle position left by the departure of Haloti Ngata to the Lions during free agency.[22] Head coach John Harbaugh named Davis the backup starting nose tackle to Williams to begin the regular season.[23]
He made his professional regular season debut in the Ravens' season-opener against the Denver Broncos and recorded three combined tackles and a pass deflection in their 19–13 loss. On September 27, 2015, Davis earned his first career start at defensive tackle and defended a pass during their 28–24 loss to the Cincinnati Bengals. He started the next two games at defensive tackle, in place of Timmy Jernigan who had an injured knee.[24] Davis was a healthy scratch for Weeks 12–14 despite having a strong start to his rookie season and being the first member of the Ravens' 2015 draft class to start.[25]
In 13 games of his rookie season, Davis produced 11 tackles and 2 passes defended.[26]
2016
Davis competed with Williams, Willie Henry, Michael Pierce, and Trevon Coley throughout training camp for the starting nose tackle position.[27][28] On September 1, 2016, Davis sustained an ankle injury and left during the Ravens' 23–14 victory over the New Orleans Saints in their pre-season finale.[29] On September 5, 2016, Davis was placed on injured reserve and missed the entire 2016 season with an ankle injury.[30]
2017
Davis returned to training camp in 2017 and competed with Brent Urban, Williams, and Bronson Kaufusi for the starting defensive end position. He was named the backup defensive end, behind Urban and Williams to start the regular season.[31]
On October 1, 2017, David earned his first start of the season after Urban was placed on injured reserve. He recorded three solo tackles in the Ravens' 26–9 loss to the Pittsburgh Steelers.[32] The next game, he suffered a hamstring injury during the first half of a 30–17 victory over the Oakland Raiders.[33] He missed the following game and played sparingly in the next 7 weeks due to the injury.
2018
On September 1, 2018, Davis was waived by the Ravens.[34]
Cleveland Browns
On September 2, 2018, Davis was claimed off waivers by the Cleveland Browns.[35] He played minimally for the Browns, registering just one assisted tackle for 2018.[36]
The Browns re-signed Davis on a one year $2 million contract on March 12, 2019.[37] The Browns released Davis on August 31, 2019.[38]
On February 4, 2020, Davis was suspended the first four games of the 2020 season for violating the league’s performance-enhancing substance policy.[42] He was re-signed by the Jaguars on April 6, 2020.[43] He was released on May 12, 2020,[44] but re-signed on August 10.[45] He was reinstated from suspension on October 5, 2020, and the team was given a roster exemption for him.[46] He was released on October 12[47] and signed to the team's practice squad the next day.[48]
New England Patriots
On October 14, 2020, Davis was signed by the New England Patriots off the Jaguars practice squad.[49] He was placed on injured reserve on November 28, 2020, with a concussion.[50] He was designated to return from injured reserve on December 17, and began practicing with the team again,[51] but was not activated before the end of the regular season.[52]
Davis signed a contract extension with the Patriots on March 15, 2021,[53] and on April 27, 2022, Davis re-signed with the Patriots.[54] He was released on August 27, 2023.[55]
Seattle Seahawks
On September 20, 2023, Davis was signed to the Seattle Seahawks practice squad.[56] He was waived on October 31.[57]
Dallas Cowboys
On November 16, 2023, Davis was signed to the Dallas Cowboys practice squad.[58] He was re-signed on March 6, 2024.[59] He was released on August 15.[60]
Davis' mother, Ovella Davis, is a pastor in the Detroit, Michigan area and is very active in her community.[62]
During the 2016 season, Davis founded the Trenchwork Foundation that's based in his hometown of Detroit. Trenchwork Foundation's mission is to maintain community development and help children stay committed to healthy living and education. They also provide children book bags and new equipment for the local youth football team.[63]