ESPN NFL draft guru Todd McShay has broken down his list of top-100 draft prospects by seven tiers in order of draft grade.
He writes: "The tiers show which portions of the class are deep and which are lean. There are some lean tiers near the top of the board, but the class is solid in Tiers 3 and 4."
His list includes 15 Pac-12 players. Here's how things stack up as well as his explanation for each tier.
Tier 1: These are the elite prospects, those who have the potential to come off the board in the top five overall picks.
3. Matt Kalil, OT, USC
Tier 2: This tier is composed of players who are a notch below elite but are still top-10 quality.
Tier 3: The prospects will offer good value between picks 10 and 20.
14. David DeCastro, OG, Stanford
Tier 4: These prospects have the tools to be good value picks in the late-first round.
26. Jonathan Martin, OT, Stanford
30. Nick Perry, DE, USC
Tier 5: These are the players teams will begin targeting as value picks early in Round 2 should they fall out of Round 1.
34. Coby Fleener, TE, Stanford
39. Nick Foles, QB, Arizona
50. Brock Osweiler, QB, Arizona State
52. Mychal Kendricks, LB, California
Tier 6: This tier contains prospects who are worthy of mid-to-late-second-round consideration.
62. Mitchell Schwartz, OT, California
63. Alameda Ta'amu, DT, Washington
67. LaMichael James, RB, Oregon
Tier 7: These players rank as solid third-round prospects.
87. Tony Bergstrom, OT, Utah
96. Chris Polk, RB, Washington
100. Trevor Guyton, DE, California