As a junior, he was converted into a defensive lineman, became a starter and received first-team All-District 6-5A honors.
As a senior in 2010, he tallied 66 tackles, 5 sacks and one interception, receiving first-team All-District 8-5A and District 8-5A Defensive Player of the Year honors.
He returned an interception 67 yards for a touchdown in the season finale against Minot State University.
As a junior in 2013, he received a medical redshirt after suffering a season-ending knee injury in the season opener against the University of New Mexico, where he made a tackle before leaving in the second half.
As a four-year junior in 2014, he appeared in all 12 games with 4 starts, totaling 29 tackles (6.5 for loss), 3.5 sacks (led the team) and 2 forced fumbles.
[3] Neill was signed as an undrafted free agent by the Dallas Cowboys after the 2016 NFL draft on May 6.
[5] On July 31, 2016, he signed with the Cleveland Browns as a free agent, with the intention of playing at linebacker.