Kiper: Stock Watch

Michigan had no answer when it came to neutralizing the charge of Purdue's 6-foot-4, 263-pound senior DE Ryan Kerrigan at Ross-Ade Stadium in West Lafayette on Saturday afternoon. After totaling 11.5 tackles for loss and seven sacks as a sophomore, Kerrigan established himself as one of the more disruptive DEs in the country in '09. During that season, he finished with 18.5 tackles for loss and 13 sacks. The latter was the third best mark in the country.

Saturday was a whole new level of dominance. The type who is always looking for ways to get better, Kerrigan's five tackles for loss and four sacks against the Wolverines on Saturday brought his season totals in those respective categories to 23.5 tackles for loss and 11.5 sacks. And his big-play ability is not limited to those two areas. Also very effective at dislodging the football from the opponent, he had two forced fumbles in the game and has 12 over the last two seasons. He showed you a very good rip move against the Wolverines. And he did a terrific job of holding the point, locating the football, shedding the blocker and making stops against the run. This guy has been rising all season.

A.J. Green | WR | Georgia

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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