Chris Cassidy played fullback and linebacker for Lincoln Pius X, helping the Thunderbolts to the state playoffs in 2015, 2016 and 2017. He was a Lincoln Journal Star second-team Super State linebacker as a senior in 2017. Cassidy made 71 tackles, while rushing for 858 yards and 10 touchdowns this past season. He also added an interception on the defensive side of the ball, as he was named first-team all-state by the Omaha World-Herald. As a junior, Cassidy ran for 342 yards and a touchdown, while recording 300 total yards and six combined touchdowns as a sophomore. Cassidy made 47 tackles in 2016, and 36 stops in 2015. Cassidy was an honorable mention all-state selection in 2016 by the Omaha World-Herald.