Kiper: Stock Watch

The fact prior to college he not only played football but also played basketball and participated in track and field gives you an idea as to how good an athlete he is. He made a very favorable initial impression on the BC coaching staff, becoming the first true freshman in a decade to start along the offensive line. As a sophomore, he made the switch from right to left tackle, where he has remained. In the Eagles' win over Syracuse this weekend, he did a very nice job as a run blocker, helping freshman back Andre Williams amass 185 rushing yards. Castonzo was firing off the football, playing with very good leverage and finishing blocks well. When looking at him as a future pro, he'll need to get stronger but he has the athleticism and technique you look for in a blindside pass protector.

Dane Sanzenbacher | WR | Ohio St.

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Mel Kiper Jr.

Football analyst

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• ESPN NFL Draft analyst since 1984
• Contributes to SportsCenter and ESPN Radio
• Writes weekly for ESPN Insider