Kiper's Big Board for 2019 NFL draft: Ranking top 25 prospects

Defense tops Kiper's preseason Big Board (1:27)

Mel Kiper Jr. breaks down why DT Ed Oliver, DE Nick Bosa and DT Rashan Gary are the top three players on his 2019 preseason Big Board. (1:27)

A new No. 1 overall prospect. Five new prospects in the top 25 (which means five more are out). A pass-rusher moving up 10 spots into the top five. And still two quarterbacks.

Check out my updated Big Board for the 2019 NFL draft -- the latest since my preseason top 25.

A few notes before I get started, same as always:

  • These aren't detailed scouting reports. I still have a lot of work to do on these prospects, and what they do from now until January matters a lot.

  • The draft is all about projection, so keep in mind that several guys here have started only one season.

  • Height and weight are based on what we have from schools. We don't get official numbers until the 2019 combine.

Note: One asterisk denotes the player is a junior, and two asterisks denote the player is a redshirt sophomore in 2018.