Week 12, he collected a season-high ten combined tackles (eight solo) during a 24–19 loss at the Jacksonville Jaguars. On December 30, 2012, Brown made four combined tackles, three pass deflections, one sack, and returned two interceptions by Chad Henne for two touchdowns during a 38–20 win against the Jacksonville Jaguars in Week 17. Brown intercepted a pass by Henne, that was intended for tight end Marcedes Lewis, and returned it 79–yards for his first career touchdown during the second quarter. During the third quarter, he intercepted a pass intended for wide receiver Toney Clemons and returned it for a 30-yard touchdown. Brown finished his rookie season in 2012 with 93 combined tackles (68 solo), 5.5 sacks, five pass deflections, three interceptions, two touchdowns, two fumble recoveries, and one forced fumble in 16 games and 14 starts. 2013 Brown entered training camp slated as the starting weakside linebacker after Will Witherspoon departed for the St. Louis Rams during free agency. Head coach Mike Munchak named Brown and Akeem Ayers the starting outside linebackers to begin the regular season. They started alongside middle linebacker Colin McCarthy. He started in the Tennessee Titans’ season-opener at the Pittsburgh Steelers and made eight solo tackles, deflected a pass, and made a season-high two sacks during a 16–9 victory. In Week 2, he collected a season-high 12 combined tackles (11 solo) during a 30–24 loss at the Houston Texans. In Week 15, Brown was benched during a 37–34 overtime loss against the Arizona Cardinals. He was demoted to a backup role for the following game. He finished the season with 91 combined tackles (52 solo), five pass deflections, four sacks, one interception, and one forced fumble in 16 games and 13 starts. 2014 On January 4, 2014, the Tennessee Titans announced their decision to fire head coach Mike Munchak after the Titans finished the previous season with a 7-9 record. Head coach Ken Whisenhunt hired Ray Horton to replace Jerry Gray as the Titans’ defensive coordinator and also changed the defense from a base 4-3 defense to a base 3-4 defense. Brown was moved to inside linebacker and competed for a starting role against Wesley Woodyard, Colin McCarthy, Moise Fokou, Zaviar Gooden, and Avery Williamson. Head coach Ken Whisenhunt named Brown and Wesley Woodyard the starting inside linebackers to begin the regular season, along with outside linebackers Derrick Morgan and Kamerion Wimbley. Brown started in