McShay's Top 32: Ranking 2018 NFL draft prospects

McShay says Darnold is the top QB in college football (1:28)

Todd McShay and Joey Galloway discuss USC's Sam Darnold as the top quarterback entering the season. (1:28)

The 2018 NFL draft will be here sooner than you think, but with at least two games under most teams' belts it's a good time to update my prospects ranking.

As Mel Kiper Jr. pointed out in his updated Big Board, these rankings will be more static throughout the season and we won't know the true heights and weights of players until the NFL combine -- which can certainly affect their draft stock.

Here are my top 32 NFL draft prospects right now:

Note: Underclassmen are marked with an asterisk.

1. Sam Darnold, QB, USC*

Grade: 95 | Preseason rank: 1

Darnold has made a couple questionable decisions throwing the football this season (two INTs in each game so far), but it hasn't changed my evaluation of him. He has made some big-time throws in the clutch, helping keep USC undefeated. His delivery still needs to be cleaned up, but his accuracy is phenomenal. He is the most complete quarterback in college football and a potential franchise signal-caller.