Overshown accepted a football scholarship from the
University of Texas at Austin. He played as a backup
safety during his first two years, appearing in 17 games, while registering 19 tackles, 2 sacks and one interception. As a sophomore in 2019, he missed four games due to a back injury, that he suffered in the seventh game against the
University of Kansas. Prior to his junior season in 2020, he switched to
weakside linebacker. He started all 10 games, recording 60 tackles, one sack and two interceptions. He was named the Defensive MVP of the
2020 Alamo Bowl, after making 6 tackles (0.5 for loss), one interception, 2 quarterback hurries and one fumble recovery. Overshown returned to Texas for his senior year, rather than enter the
2021 NFL draft. He started 10 games (missed one contest with a toe injury), while recording 74 tackles (led the team), 5.5 tackles for loss, 2 sacks, 2 fumble recoveries, 2 pass breakups and one blocked kick. He had 9 tackles (0.5 tackles for loss) against
Texas Tech University. He made 10 tackles with a career-high eight solo stops and one fumble recovery against
Texas Christian University. As a super senior in 2022, he appeared in 12 games (11 starts), posting career-highs with 96 tackles (10 for loss), 4 sacks and five pass breakups. He received first-team
All-Big 12 honors. He had 9 tackles (1.5 for loss) against
Kansas State University. He made 11 tackles (half a tackle for loss) and half a sack against
Texas Christian University. He had 14 tackles (2 for loss), one sack and 2 pass breakups against
Baylor University. ==Professional career==