Selected in the third round (94th overall) of the 2019 NFL Draft by the Buccaneers.
Played in 13 games, with five starts, totaling 21 tackles, two interceptions and 17 passes defensed.
Tied for fourth in the NFL with 17 passes defensed, all coming over the final nine weeks of the season.
Has three games of 4+ passes defensed this season, tying him for the most such games in a single season since at least 2000.
Made NFL debut in a reserve role in season opener vs. San Francisco (9/8).
Played in a reserve role in win at Carolina (9/12).
Inactive with an ankle injury vs. New York Giants (9/22) and at Los Angeles Rams (9/29).
Inactive at New Orleans (10/6).
Returned to action in a reserve role vs. Carolina (10/13).
Played in a reserve role at Tennessee (10/27).
Saw most extensive playing time of rookie season with 58 snaps at Seattle (11/3), recording five tackles and four passes defensed.
Notched first career interception (Kyler Murray) at the Tampa Bay 8-yard line with 3:40 remaining and Arizona leading 27-23, setting up the Buccaneers' game-winning touchdown drive. Totaled two tackles, including one for loss, and four tackles defensed. Became first NFL player since Jalen Ramsey in 2016 to record consecutive game with four passes defensed.
Played on special teams vs. New Orleans (11/17).
In first career start, set a career high with five passes defensed, to go along with two tackles, in win at Atlanta (11/24). It marked the third game this season in which Dean recorded 4+ passes defensed, tying him for the most such games in a single season since at least 2000. The five passes defensed tied for the most for any NFL player this season and the most for a Buccaneers player since 2007.
Started in win at Jacksonville (12/1) at recorded two tackles before leaving the game with a shoulder injury.
Started in win vs. Indianapolis (12/8), recording one tackle and one pass defensed.
Posted three tackles and two passes defensed in win at Detroit (12/15).
Intercepted Deshaun Watson and returned it 31 yards to set up a Buccaneers touchdown, vs. Houston (12/21).
Collected four tackles in start vs. Atlanta (12/29).
Played in 26 career games at Auburn (2015-18), totaling 73 tackles (4.5 for loss), 17 passes defensed, two interceptions, and a sack.
Entering the 2018 season, Dean was a preseason All-SEC second-team selection. On the year, he tied for the team lead in interceptions, with two, while posting the second-most passes defensed, with nine.
As a redshirt sophomore (2017), tallied 43 tackles (2.5 for loss) and eight passes defensed, the second-most on the team, trailing only current Buccaneers teammate Carlton Davis.
Suffered an injury prior to the 2016 season, missing the year.
Redshirted as a true freshman (2015).
Received a bachelor's degree from the College of Liberal Arts in May, 2018.
Attended Cocoa High School (Cocoa, Florida), where he was a two-time Florida first-team Class 4A all-state pick and was named the 2014 Brevard County player of the year and the Florida Athletic Coaches Association's District 12 MVP.
Son of Yolanda Kimbrough and James Dean.
Has four brothers: Derrick Jr., James Jr., Jamaine and Jayden.
In June 2019, Dean participated in Tampa's Police Department Citizen's Academy and visited MacDill's Air Force Base as part of the rookie's program.