• 2017 Big Sky All-Academic Team
• 2016 Big Sky All-Academic Team
• 2015 Big Sky All-Academic Team

2017: Ranked fifth on the squad with 54 tackles (29 solo, 25 assists)…Posted 2.5 tackles for loss and a sack…Finished season with a pair of pass breakups, one quarterback hurry and a forced fumble…Tallied five tackles and one sack in the season opener at Arizona (9/2)…Posted six tackles vs. Western Illinois (9/9)…Registered eight stops and forced a fumble in road win at Cal Poly (9/23)…Recorded six tackles at Portland State (10/14)…Tied season-high total for tackles with eight with one TFL in victory over UC Davis (10/21)…Made four stops at Montana (11/4)…Finished with four tackles and a quarterback hurry vs. Montana State (11/11)…Tallied four tackles in NCAA FCS Playoff game vs. San Diego (11/25).

2016: Named to the Big Sky All-Academic Team for the second year in a row...Competed in all 11 games and earned three starts...Ranked third on the team with 67 total tackles and was tied for third on the team with 33 solo tackles...Recorded two tackles for a loss of four yards...Tallied one sack and three pass breakups...Recorded at least two tackles in every game and at least four tackles in nine games...Set a new career-high of 10 tackles twice against Eastern Washington and Northern Colorado.

2015: NAU Defensive Competitive Greatness Award (Lumberjack Award)…Earned Big Sky All-Academic Team honors...Competed in all 11 games earning a pair of starts…Recorded a tackle in all but one game and at least three tackles in eight games…Had a career-high eight tackles versus Sacramento State in the home finale…Against Weber State had a career-high six solo tackles finishing with seven total…Registered a forced fumble at No. 4 Eastern Washington…Was credited with seven tackles for a loss of 25 yards on the season…Tallied three sacks for a drop of 16 yards…Finished the season with 39 tackles – 23 solo and 16 assisted. 

2014: Redshirted the season.

High School: A 2014 graduate of Salpointe Catholic High School…Two-year letterwinner and two-year starter for Dennis Bene…Team won states in 2013 at 14-0…In two years, he recorded 167 tackles and 12 sacks…Named First Team All-State, NFF Linebacker of the Year for Arizona and First Team All-Southern Arizona...Also played two years for John Kelley at University High School prior to Salpointe.

Personal: Born Jacob Allen Casteel November 19, 1995 in Rockville, Md....Son of Jeff and Rosemary Casteel…Has one sister, Sarah.