From CBS Sports: 27 prospects are locks to be taken in the first round

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Offensive line – 5 locks; 7 possible
This is far from a stellar group, but need alone could result in them comprising roughly a fourth of the first round. Quenton Nelson is a potential Hall of Famer, and his Notre Dame teammate, Mike McGlinchey may have to wait a while but he's going to go Thursday. I am thoroughly convinced that Arkansas center Frank Ragnow is going in the first round despite little fanfare, and I'd pencil in Iowa center James Daniels and UTEP guard Will Hernandez as well. Georgia guard Isaiah Wynn has a good shot to go late first round. Connor Williams (Texas) is in the mix, too.

Defensive end/edge – 3 locks; 6 possible
Slim pickings here my friends. This is not the draft for dominant pass rushers. Bradley Chubb goes somewhere in the top six picks and Marcus Davenport is likely gone by the middle of the first round and Harold Landry somewhere in the bottom third of the round, I suspect. Then it gets really murky. Josh Sweat has a shot to go late first round and has been a late riser. Lorenzo Carter could sneak in as well.

Defensive tackle – 3 locks; 4 possible
If Maurice Hurst did not have a heart condition I'd be going with four locks at this position. But that situation, despite him being cleared to work out at his pro day, etc., it is certainly a factor teams have to weigh. Vita Vea won't make it to the middle of the first round and Da'Ron Payne won't make it into the 20s and I doubt that Taven Bryan gets to pick 30. Those three have fairly concrete floors given how seriously some teams covet them.

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