The Oakland Raiders have signed first-round draft pick OL Kolton Miller.

General manager Reggie McKenzie drafted Miller 15th overall in last month’s draft after trading back with the Arizona Cardinals.

Miller played three seasons at UCLA, appearing in 31 games (23 starts) at both left and right tackle over his career. He’s projected to compete for the starting right tackle position with veteran Donald Penn protecting quarterback Derek Carr’s blindside.

The Raiders still have three unsigned draft picks.