Mel Kiper 2019 Big Board: Nick Bosa Remains No. 1, Ed Oliver Drops Out of Top 5

Ohio State star Nick Bosa remains the top player on the big board of ESPN draft expert Mel Kiper Jr.

Although a core muscle injury limited Bosa to three games this season before he underwent surgery, Kiper downplayed how much that will impact his draft position: "I don't expect the injury to affect his draft stock. He is an elite pass-rusher who is advanced for his age in his technique—you can probably thank his brother, Joey, and dad, John, both former first-round picks."

Houston Cougars star Ed Oliver, however, is trending in the wrong direction. Oliver was second on Kiper's previous big board in October but slipped to eighth.

Here are Kiper's top 25 players in the 2019 draft class:

Mel Kiper 2019 Draft Big Board

1. Nick Bosa, DE, Ohio State

2. Quinnen Williams, DT, Alabama

3. Devin White, LB, LSU

4. Josh Allen, OLB, Kentucky

5. Greedy Williams, CB, LSU

6. Justin Herbert, QB, Oregon

7. Devin Bush, LB, Michigan

8. Ed Oliver, DT, Houston

9. Rashan Gary, DT, Michigan

10. Deandre Baker, CB, Georgia

11. Dwayne Haskins, QB, Ohio State

12. Jonah Williams, OT, Alabama

13. Jeffery Simmons, DT, Mississippi State

14. Jachai Polite, OLB, Florida

15. Marquise Brown, WR, Oklahoma

16. Greg Little, OT, Ole Miss

17. Jaylon Ferguson, DE, Louisiana Tech

18. Clelin Ferrell, DE, Clemson

19. Dexter Lawrence, DT, Clemson

20. Christian Wilkins, DT, Clemson

21. Deionte Thompson, S, Alabama

22. Brian Burns, OLB/DE, Florida State

23. Derrick Brown, DT, Auburn

24. Julian Love, CB, Notre Dame

25. Daniel Jones, QB Duke

Kiper wrote he moved Oliver down in part because the Houston defender might weigh 275 pounds—not his listed weight of 292 pounds on the school's official site. Kiper also thought the defensive tackle "hasn't developed consistent pass-rush moves" through his junior season.

Nobody rose higher on Kiper's big board than Ohio State Buckeyes quarterback Dwayne Haskins, who went from being unranked to No. 11.

Haskins has thrown for 4,081 yards, 42 touchdowns and seven interceptions in 2018 en route to winning Big Ten Offensive Player of the Year.

As a redshirt sophomore, Haskins has two years of eligibility beyond this year should he want to continue his college career. But he'd likely be one of the first quarterbacks off the board were he to declare for the 2019 draft, which will be difficult to turn down.

Justin Herbert might indirectly make Haskins' decision easier. Kiper ranked the Oregon Ducks quarterback as the No. 1 player at his position but noted there's a good chance Herbert could spurn the NFL and return as a senior for Oregon in 2019.

Earlier this month, Bleacher Report's Matt Miller spoke to one NFC talent evaluator who preferred Duke Blue Devils quarterback Daniel Jones above both Herbert and Haskins.

According to Miller, one evaluator said the perception on Herbert is that he's "not ready mentally for the NFL," while the concerns regarding Haskins center around the lack of quarterbacks who have found NFL success after playing for head coach Urban Meyer.

The absence of a general consensus about the top quarterback in 2019 should make following the draft process more enjoyable.