Little movement in draft rankings

The latest draft rankings are out from ESPN's Todd McShay and Mel Kiper and there isn't much change involving the Pac-12 players projected for the first round.

On McShay's top 32Insider, Stanford offensive guard David DeCastro climbed closer to the top 10, moving up from No. 13 to 12.

McShay on DeCastro: DeCastro's physical, dominating style made him the top interior lineman in the country in 2011, and he is a plug-and-play prospect who will be a starter from the moment he sets foot in camp.

DeCastro's teammate, offensive tackle Jonathan Martin, fell from No. 22 to 24 while USC defensive end Nick Perry moved up one spot to No. 28. Andrew Luck and Matt Kalil held their No. 1 and No. 3 spots, respectively.

For those of you curious about what an NFL draft board looks like, McShay and the Scouts Inc. team put one togetherInsider.

On Mel Kiper's Big BoardInsider, DeCastro moved up from No. 15 to 14. Luck and Kalil also remained at Nos. 1 and 3.

Kiper on Luck: His pro day has arrived. Last week, got good news with Reggie Wayne staying in Indy. Luck has worked hard during the draft process, confirming a lot of what evaluators felt about his mentality. Status quo remains in terms of profile. The total package: arm strength, size, smarts, demeanor. Ready to play.

Finally, Kiper also updated his top five draft prospects by positionInsider. It's the usual suspects in their usual spots. Brock Osweiler sits as the No. 5 quarterback, LaMichael James is the No. 2 running back; Rhett Ellison, Coby Fleener, Mychal Kendricks, Vontaze Burfict and Bryan Anger all appear in the various rankings.