The Shutdown 50 — #10: David DeCastro, OG, Stanford

With the 2011 NFL season in the books, it's time to turn our eyes to the NFL draft, and the pre-draft evaluation process. Right up to the draft, we'll be taking a closer look at the 50 players who may be the biggest NFL difference-makers when all is said and done. We continue this year's series with Stanford guard David DeCastro, the second-best prospect in a Cardinal draft class that could see four players go in the first round. He's not quite as positionally interesting as that Andrew Luck guy, but DeCastro is the best guard prospect in a number of years -- at least the best since Florida's Maurkice Pouncey and quite possibly the best since Michigan's Steve Hutchinson. it's rare that you see an offensive line prospect this pro-ready right out of the chute -- DeCastro said at the scouting combine that when he watches former Stanford head coach Jim Harbaugh dial up plays for the San Francisco 49ers, he can call the plays before they happen. A technical marvel -- he almost never loses ground because he's so textbook in his approach -- DeCastro also has the kind of attitude all coaches love in offensive linemen. "He arrives angry and focused and expects everybody else to be the...