Shelton was rated a three-star recruit and committed to play college football at Washington over offers from Colorado and Nevada.

[2] He became the Huskies starting center going into his redshirt junior season and was named second-team All-Pac-12 Conference.

[3] He was Captain of the 2017 team and was twice awarded the John P. Angel Lineman of the Year trophy for outstanding play.

After the season the Rams tendered Shelton to a one-year contract as an exclusive-rights free agent.

[15] Shelton saw his first extended playing time in Week 12 of the 2021 season, playing 67 snaps at center after starter Brian Allen suffered a knee injury during the Rams' first offensive snap in a 37–7 win over the Jacksonville Jaguars.

[22] He was activated from injured reserve three days later and started at Center for all remaining regular season games.