Proctor made the announcement via social media. He started 12 games during his career with the Cavaliers at left and right guard.
Always bet on yourself! Thank you for the opportunity. pic.twitter.com/Ii8DdNaHks— RJ Proctor (@thenamesPROCTOR) March 10, 2019
He'll help shore up Oklahoma's line, as the Sooners graduated both guards from last year's offense.
Center Creed Humphrey is OU's only returning offensive lineman starter.