[8] In week eight of the 2021 season, Brownlee intercepted a pass which he returned 70 yards for a touchdown, as he helped Florida State rout UMass.

[11][12] Brownlee finished his career at Florida State playing in 24 games with 15 starts, where he totaled 78 tackles, seven pass deflections, three interceptions, and a forced fumble.

[16] In the 2023 season, Brownlee missed three games with a foot injury, but he still notched 30 tackles, six pass deflections, an interception and a fumble recovery.

Brownlee made his NFL debut in the Titans' season opener against the Chicago Bears as a rotational cornerback behind starters L'Jarius Sneed and Chidobe Awuzie, making two solo tackles his first game.

[25] He played all 17 games of his rookie season, including 14 starts, and finished with 75 tackles, nine pass deflections, one interception, and a fumble recovery.