Trevon Diggs was born September 20, 1997, in Gaithersburg, Maryland. He is a cornerback in the NFL. As a true freshman at Alabama in 2016, Diggs played safety, wide receiver, and was a return specialist. He finished the year with five tackles and one forced fumble on defense, 11 receptions for 88 yards, and a touchdown on offense, and had 296 total return yards on special teams. As a sophomore in 2017, Diggs switched to cornerback full-time. He was a starter for the season opener against Florida State University, before being passed on the depth chart by Levi Wallace. He posted 6 tackles and 3 passes defended. He also played on special teams, returning 18 punts for 154 yards with a long of 21 yards, and 2 kickoffs for 74 yards. As a junior in 2018, Diggs started the first six games of the season, before being lost for the year with a broken foot he suffered against the University of Arkansas. He finished the year with 20 tackles and an interception. As a senior in 2019, he started 12 games, while registering 37 tackles, 3 interceptions (tied for second on the team), 8 passes defended (tied for the team lead), and 2 fumble recoveries, including a 100-yard touchdown return. He returned an interception for an 84-yard touchdown, recovered 2 two fumbles (one for a touchdown), and had 100-plus combined return yards against the University of Arkansas. He had a career-high 10 tackles against Louisiana State University.
Diggs was selected by the Dallas Cowboys in the second round (51st overall) of the 2020 NFL Draft. In Week 3 against the Seattle Seahawks, Diggs forced a fumble on D.K. Metcalf at the goal line and the ball broke the plane of the endzone and went out of bounds, resulting in a touchback. Diggs was able to force the fumble after Metcalf slowed down and held the ball out with one hand near the goal line. In Week 4 against the Cleveland Browns, Diggs recorded his first career sack on Baker Mayfield during the 49–38 loss. In Week 8 against the Philadelphia Eagles on Sunday Night Football, Diggs recorded his first 2 career interceptions off of passes thrown by Carson Wentz during the 23–9 loss. He suffered a fractured bone in his foot in Week 9 and was placed on injured reserve on November 18, 2020. On December 19, 2020, Diggs was activated off of injured reserve.