Here's a breakdown of Oklahoma's offensive line for 2019:
Key returnees: Sophomore center Creed Humphrey
Key losses: Left tackle Bobby Evans (NFL draft); left guard Ben Powers (graduation); right guard Dru Samia (graduation); Cody Ford (NFL draft)
Newcomers: Junior Finley Felix (Coffeyville Community College); freshman Stacey Wilkins (Camden, Ark.); freshman EJ Ndoma-Ogar (Allen); freshman Marcus Alexander (Sunnyvale); Redshirt freshman Darrell Simpson; Redshirt freshman Brey Walker
Biggest unanswered question: How long will it take for this new group to come together?
Oklahoma has the unenviable task of replacing four starting offensive linemen next season.