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Wilgar played linebacker as a four-year starter at BYU (2018-22) appearing in 45 games with 40 starts. He tallied 198 total tackles (103 solo) along with 5 interceptions, 10 pass breakups and 16.5 tackles for loss. His accomplished career includes the following highlights:
- Pro Football Network Independent Linebacker of the Year and All-Independent First Team Defense (2021), Phil Steele All-Independent Second Team Defense (2021), Bronco Nagurski Trophy watchlist (2021), Butkus Award watchlist (2021) and Pro Football Focus All-Freshman Team (2019).
- Played in and started seven games in 2022, recording 30 tackles (nine solo) and a pass breakup.
- In 2021, he played in and started 10 games before a season-ending injury. He finished as BYU's third-leading tackler with 56 (29 solo, six for loss), 1.5 sacks, two quarterback hurries, two interceptions and a forced fumble. He also had six games with five or more tackles and a career-high 11 tackles in BYU's 66-49 win over Virginia.
- Named Second Team All-Independent in 2020, registering 57 tackles (third on the team) with 5 tackles for loss while adding a team-best 5 QB hurries, 4 pass breakups and a forced fumble. He helped BYU's defense rank No. 4 in scoring defense (15.3) and No. 12 in total defense during BYU's 11-1 season and No. 11 national finish.
- In 2019, he started 12 of 13 games, leading the team with three interceptions (tied for No. 2 nationally). He had at least five tackles in five games while being named player of the game twice (vs. No. 24 USC and at Utah State).
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- Major: Geography
- Parents are Dana and Misti
- Wife's name is Christine, married in 2019. They have one son named Madden
- Dad, Dana, played defensive back at BYU from 1973-76
- Knows how to ride a unicycle
- Prepped at Dixie High School
- Totaled 131 career tackles for the Flyers
- Posted nine career interceptions
- 4A Deseret News All-State Honorable Mention as a senior in 2017
- Also played basketball