[1] Following his sophomore year at Auburn where he had 43 tackles and eight pass breakups, Dean was named to Bruce Feldman's college football freaks list.

[7] Dean made his regular season debut in Week 9 against the Seattle Seahawks during a 40–34 loss in which he recorded six tackles and four pass deflections but gave up 3 touchdowns.

In Week 10 against the Arizona Cardinals, Dean recorded 4 pass deflections and his first career interception off fellow rookie Kyler Murray in the 30–27 win.

[11] In Week 6 against the Green Bay Packers, Dean intercepted a pass thrown by Aaron Rodgers and returned it 32 yards for a touchdown during the 38–10 win.

[14] Dean played in all four games in the Buccaneers' playoff run that resulted in the team winning Super Bowl LV.